Rapid application development model
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The Rapid Application Development (RAD) model is an incremental model that delivers software to users early by devoting less time to planning and more time to development. It uses a combination of Joint Application Development techniques and CASE tools to convert user needs into designs through collaboration between system developers and users. Feedback from development is then used to refine requirements and design. The RAD model aims to complete projects on time and within budget while identifying problems early through its fast iterative development process.
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Software Development Life Cycle
SDLC is the acronym of Software Development Life Cycle. It is also called as Software development process. The software development life cycle (SDLC) is a framework defining tasks performed at each step in the software development process.
Software requirement and specification
The document discusses software requirements and specifications. It explains that requirements engineering is the process of establishing customer requirements for a system. Requirements can range from high-level abstract statements to detailed functional specifications. Both types of statements may be called requirements. The document also discusses different types of requirements like user requirements, system requirements, functional requirements, and non-functional requirements. It provides examples and explanations of each. The structure and intended users of a requirements document are also covered.
Rad model
Rapid application development (RAD) aims to develop software quickly through a model with phases like business modeling, data modeling, process modeling, application generation, and testing. Business modeling defines information flow. Data modeling refines information into entities and attributes. Process modeling transforms data objects to support business functions. Automated tools help build the software. Testing reduces risk through component reuse and interface exercises. RAD requires tools like case tools, data dictionaries, storyboards, and risk registers. Advantages include quick reviews, isolation of problems, and flexibility, while disadvantages are lack of planning and need for skilled developers.
Iterative model
The iterative model breaks a project into small modules that can be delivered incrementally. A working version is produced in the first module, with each subsequent release adding additional functionality until the full system is complete. It allows for quick releases during development and makes it easier to develop and test in smaller iterations while incorporating customer feedback at each stage. However, it requires more resources than traditional models and skilled management to avoid increased costs over time.
Prototype model
The document discusses the prototype model in software development. It defines a prototype model as building a working prototype of the system before full development to allow users to evaluate proposals. The key steps are requirements analysis, quick design, building the prototype, getting customer evaluation and feedback, and refining the prototype iteratively until the user is satisfied. Prototype models have advantages like early assessment, clarifying requirements, and ensuring user requirements are met. However, they can also be time-consuming and expensive if multiple prototypes are needed before finding the perfect fit.
Software process
The software process involves specification, design and implementation, validation, and evolution activities. It can be modeled using plan-driven approaches like the waterfall model or agile approaches. The waterfall model involves separate sequential phases while incremental development interleaves activities. Reuse-oriented processes focus on assembling systems from existing components. Real processes combine elements of different models. Specification defines system requirements through requirements engineering. Design translates requirements into a software structure and implementation creates an executable program. Validation verifies the system meets requirements through testing. Evolution maintains and changes the system in response to changing needs.
ppt on sOFTWARE DEVELOPMENT LIFE CYCLE
The document discusses the software development life cycle (SDLC). It describes the typical phases of SDLC including problem definition, program design, coding, debugging, testing, documentation, maintenance, and extension/redesign. It also covers different SDLC models like waterfall, prototyping, and agile development. The SDLC process is best for structured environments while iterative models work better for web and e-commerce projects where frequent stakeholder feedback is needed.
RAD Model
Rapid Application Development model, Software process model,
Pros & Cons, omparison, Example, Conclusion
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Software Development Life Cycle
SDLC is the acronym of Software Development Life Cycle. It is also called as Software development process. The software development life cycle (SDLC) is a framework defining tasks performed at each step in the software development process.
Software requirement and specification
The document discusses software requirements and specifications. It explains that requirements engineering is the process of establishing customer requirements for a system. Requirements can range from high-level abstract statements to detailed functional specifications. Both types of statements may be called requirements. The document also discusses different types of requirements like user requirements, system requirements, functional requirements, and non-functional requirements. It provides examples and explanations of each. The structure and intended users of a requirements document are also covered.
Rad model
Rapid application development (RAD) aims to develop software quickly through a model with phases like business modeling, data modeling, process modeling, application generation, and testing. Business modeling defines information flow. Data modeling refines information into entities and attributes. Process modeling transforms data objects to support business functions. Automated tools help build the software. Testing reduces risk through component reuse and interface exercises. RAD requires tools like case tools, data dictionaries, storyboards, and risk registers. Advantages include quick reviews, isolation of problems, and flexibility, while disadvantages are lack of planning and need for skilled developers.
Iterative model
The iterative model breaks a project into small modules that can be delivered incrementally. A working version is produced in the first module, with each subsequent release adding additional functionality until the full system is complete. It allows for quick releases during development and makes it easier to develop and test in smaller iterations while incorporating customer feedback at each stage. However, it requires more resources than traditional models and skilled management to avoid increased costs over time.
Prototype model
The document discusses the prototype model in software development. It defines a prototype model as building a working prototype of the system before full development to allow users to evaluate proposals. The key steps are requirements analysis, quick design, building the prototype, getting customer evaluation and feedback, and refining the prototype iteratively until the user is satisfied. Prototype models have advantages like early assessment, clarifying requirements, and ensuring user requirements are met. However, they can also be time-consuming and expensive if multiple prototypes are needed before finding the perfect fit.
Software process
The software process involves specification, design and implementation, validation, and evolution activities. It can be modeled using plan-driven approaches like the waterfall model or agile approaches. The waterfall model involves separate sequential phases while incremental development interleaves activities. Reuse-oriented processes focus on assembling systems from existing components. Real processes combine elements of different models. Specification defines system requirements through requirements engineering. Design translates requirements into a software structure and implementation creates an executable program. Validation verifies the system meets requirements through testing. Evolution maintains and changes the system in response to changing needs.
ppt on sOFTWARE DEVELOPMENT LIFE CYCLE
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Software Process Models defines a distinct set of activities, actions, tasks, milestones, and work products that are required to engineer high-quality software...
For more knowledge watch full video...
Video URL:
https://youtu.be/3Lxnn0O3xaM
YouTube Channel URL:
https://www.youtube.com/channel/UCKVvceV1RGXLz0GeesbQnVg
Google+ Page URL:
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My Website Link:
http://appsdisaster.blogspot.com/
If you are interested in learning more about topics like this so Please don't forget to like, share, & Subscribe to us.
Software process Models
Software life cycle model: The descriptive and diagrammatic representation of the software life cycle
It represent all the activities performed on software product from the inception to retirement
It also depicts the order in which these activities are to be undertaken
More than one activity can be carried out in a single phase
The primary advantage of adhering to a life cycle model is that it encourages development of software in a systematic and disciplined manner
When a program is developed by a single programmer ,he has the freedom to decide the exact steps through which he will develop the program
Iterative Linear Sequential Model
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The document discusses various software development life cycle (SDLC) models including waterfall, prototyping, spiral, RAD and V-model. It provides advantages and disadvantages of each model. In conclusion, the RAD model is identified as the best model to implement for a software project since it emphasizes delivering projects in smaller pieces to encourage user involvement and provide greater flexibility.
Incremental model
The incremental model is a software development method where the product is designed, implemented, and tested incrementally in builds until completion. Each module passes through requirements, design, implementation, and testing individually. Subsequent releases of modules add functionality to previous releases until the full system is achieved. The incremental model generates working software early and allows customer feedback at each build. It is also flexible, lowers initial costs, and easier to test and manage risks. However, it requires good upfront planning and design and has a higher total cost than waterfall. The incremental model is well-suited for web applications and when major requirements are defined but details may evolve.
Comparison of waterfall model and prototype model
The document compares the waterfall model and prototype model of software development. The waterfall model is a sequential process with distinct phases from conception to maintenance. It is simple but inflexible. The prototype model builds throwaway prototypes to understand requirements, allowing for user feedback and flexibility but potentially increasing complexity. Each model suits different types of projects based on requirements certainty, resources, and need for user interaction.
SDLC Models
The document presents information on the Software Development Life Cycle (SDLC), including:
1) It describes the seven main phases of the SDLC - planning, analysis, design, development, testing, implementation, and maintenance.
2) It discusses several SDLC models like waterfall, iterative, prototyping, spiral and V-model and compares their strengths and weaknesses.
3) It emphasizes the important role of testing in the SDLC and describes different testing types done during the phases.
Rapid application developmet
Rapid Application Development (RAD) is an incremental software development process used to build systems within 60-90 days. It involves business, data, and process modeling, application generation, and testing. RAD is based on agile methods like Scrum and extreme programming and enables quick reviews, constant integration, and flexibility. However, it requires a modularized approach and skilled developers, and is not suitable for small projects or all applications due to higher costs.
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The document discusses software requirements and requirements engineering. It introduces concepts like user requirements, system requirements, functional requirements, and non-functional requirements. It explains how requirements can be organized in a requirements document and the different types of stakeholders who read requirements. The document also discusses challenges in writing requirements precisely and provides examples of requirements specification for a library system called LIBSYS.
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Sdlc
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The document discusses different software development life cycle (SDLC) models including waterfall, spiral/iterative, and agile. It provides an overview of each model's phases and when they are best applied. The waterfall model follows sequential phases from requirements to maintenance. The spiral model is risk-driven and iterative. The agile model emphasizes speed, reduced documentation, and frequent customer feedback through shorter development cycles. SDLC models provide structure, standard processes and deliverables to software development projects.
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The document discusses several software development life cycle (SDLC) models: Waterfall, V-shaped, structured evolutionary prototyping, rapid application development (RAD), incremental, and spiral. For each model, it describes the key steps, strengths, weaknesses, and scenarios where the model is best applied. The Waterfall model involves sequential phases from requirements to maintenance, while the V-shaped model adds verification and validation phases. Structured evolutionary prototyping uses iterative prototyping for requirements gathering. RAD emphasizes rapid delivery through time-boxing and productivity tools. Incremental development prioritizes requirements delivery in groups. The spiral model incorporates risk analysis, prototyping, and iterative cycles.
PROTOTYPE MODEL
A prototype model is system development life cycle (SDLC) model used by companies in information system department.
Software Engineering : Requirement Analysis & Specification
The document discusses requirements analysis and specification in software engineering. It defines what requirements are and explains the typical activities involved - requirements gathering, analysis, and specification. The importance of documenting requirements in a Software Requirements Specification (SRS) document is explained. Key sections of an SRS like stakeholders, types of requirements (functional and non-functional), and examples are covered. Special attention is given to requirements for critical systems and importance of non-functional requirements.
Rad model
Rapid Application Development (RAD) is an agile software development methodology that focuses on rapid prototyping through workshops and iterative testing with customers. It involves business modeling to identify information flows, data modeling to define necessary data objects, and process modeling to convert data objects into business processes. Automated tools are then used to generate code from the models. The RAD model aims to reduce development time through reusability, early customer feedback, and short iteration cycles enabled by powerful modeling and code generation tools. However, it relies on strong individual performances, is only suitable for modularized systems, and requires high modeling and development skills.
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The document discusses software architecture design. It defines software architecture as the structure of components, relationships between components, and properties of components. An architectural design model can be applied to other systems and represents predictable ways to describe architecture. The architecture represents a system and enables analysis of effectiveness in meeting requirements and reducing risks. Key aspects of architectural design include communication between stakeholders, controlling complexity, consistency, reducing risks, and enabling reuse. Common architectural styles discussed include data-centered, data flow, call-and-return, object-oriented, and layered architectures.
List of Software Development Model and Methods
RiantSoft a Software Development Company derived the most useful and different types of Software Development Model for the users who want to know the development process. RiantSoft is specialized in custom software development with latest cutting edge technologies.
Software development life cycle (SDLC)
The document defines the software development life cycle (SDLC) and its phases. It discusses several SDLC models including waterfall, prototype, iterative enhancement, and spiral. The waterfall model follows sequential phases from requirements to maintenance with no overlap. The prototype model involves building prototypes for user feedback. The iterative enhancement model develops software incrementally. The spiral model is divided into risk analysis, engineering, construction, and evaluation cycles. The document also covers software requirements, elicitation through interviews and use cases, analysis through data, behavioral and functional modeling, and documentation in a software requirements specification.
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Requirement prioritization is used in Software product management for determining which candidate requirements of a software product should be included in a certain release. Requirements are also prioritized to minimize risk during development so that the most important or high risk requirements are implemented first. Several methods for assessing a prioritization of software requirements exist.
R.A.D. - Rapid Application Development
A 1986 movie depicts a young boy competing against experienced riders in a high-stakes BMX trick competition to win it all. Rapid Application Development (RAD) is a software development methodology that emphasizes rapid prototyping and minimal planning in order to create usable systems quickly, often within 60-90 days, though sometimes with compromises to cost, quality or completeness. The document outlines the principles, process, benefits and limitations of the RAD approach.
RAD Model & Prototyping Of Software Engineering
The document discusses the RAD model and prototyping. The RAD model is an incremental software development process where components are developed in parallel. It has four phases: requirements planning, user design, construction, and cutover. Prototyping involves creating initial versions of the system to get user feedback and evolve the design before full development. There are two types of prototypes: throwaway prototypes that are not part of the final system, and evolutionary prototypes that are iteratively improved based on user feedback.
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Here you are going to know What is Agile Development & What are Agile Process Models for the development of Software Product.
What are different types of Agile Development, steps involve in Agile Development, XP, Scrum, Traditional Process Models with full text and animated description.
Software Process Models defines a distinct set of activities, actions, tasks, milestones, and work products that are required to engineer high-quality software...
For more knowledge watch full video...
Video URL:
https://youtu.be/3Lxnn0O3xaM
YouTube Channel URL:
https://www.youtube.com/channel/UCKVvceV1RGXLz0GeesbQnVg
Google+ Page URL:
https://plus.google.com/113458574960966683976/videos?_ga=1.91477722.157526647.1466331425
My Website Link:
http://appsdisaster.blogspot.com/
If you are interested in learning more about topics like this so Please don't forget to like, share, & Subscribe to us.
Software process Models
Software life cycle model: The descriptive and diagrammatic representation of the software life cycle
It represent all the activities performed on software product from the inception to retirement
It also depicts the order in which these activities are to be undertaken
More than one activity can be carried out in a single phase
The primary advantage of adhering to a life cycle model is that it encourages development of software in a systematic and disciplined manner
When a program is developed by a single programmer ,he has the freedom to decide the exact steps through which he will develop the program
Iterative Linear Sequential Model
Software engineering model
The document discusses various software development life cycle (SDLC) models including waterfall, prototyping, spiral, RAD and V-model. It provides advantages and disadvantages of each model. In conclusion, the RAD model is identified as the best model to implement for a software project since it emphasizes delivering projects in smaller pieces to encourage user involvement and provide greater flexibility.
Incremental model
The incremental model is a software development method where the product is designed, implemented, and tested incrementally in builds until completion. Each module passes through requirements, design, implementation, and testing individually. Subsequent releases of modules add functionality to previous releases until the full system is achieved. The incremental model generates working software early and allows customer feedback at each build. It is also flexible, lowers initial costs, and easier to test and manage risks. However, it requires good upfront planning and design and has a higher total cost than waterfall. The incremental model is well-suited for web applications and when major requirements are defined but details may evolve.
Comparison of waterfall model and prototype model
The document compares the waterfall model and prototype model of software development. The waterfall model is a sequential process with distinct phases from conception to maintenance. It is simple but inflexible. The prototype model builds throwaway prototypes to understand requirements, allowing for user feedback and flexibility but potentially increasing complexity. Each model suits different types of projects based on requirements certainty, resources, and need for user interaction.
SDLC Models
The document presents information on the Software Development Life Cycle (SDLC), including:
1) It describes the seven main phases of the SDLC - planning, analysis, design, development, testing, implementation, and maintenance.
2) It discusses several SDLC models like waterfall, iterative, prototyping, spiral and V-model and compares their strengths and weaknesses.
3) It emphasizes the important role of testing in the SDLC and describes different testing types done during the phases.
Rapid application developmet
Rapid Application Development (RAD) is an incremental software development process used to build systems within 60-90 days. It involves business, data, and process modeling, application generation, and testing. RAD is based on agile methods like Scrum and extreme programming and enables quick reviews, constant integration, and flexibility. However, it requires a modularized approach and skilled developers, and is not suitable for small projects or all applications due to higher costs.
Software requirements
The document discusses software requirements and requirements engineering. It introduces concepts like user requirements, system requirements, functional requirements, and non-functional requirements. It explains how requirements can be organized in a requirements document and the different types of stakeholders who read requirements. The document also discusses challenges in writing requirements precisely and provides examples of requirements specification for a library system called LIBSYS.
Lecture 12 requirements modeling - (system analysis)
This document discusses requirements modeling in software engineering. It covers creating various models during requirements analysis, including scenario-based models, data models, class-oriented models, flow-oriented models, and behavioral models. These models form the requirements model, which is the first technical representation of a system. The document provides examples of writing use cases and constructing a preliminary use case diagram for a home security system called SafeHome. It emphasizes that requirements modeling lays the foundation for software specification and design.
Sdlc
The document discusses the software development life cycle (SDLC), including its objectives, main phases, and models. The key phases are requirements analysis, design, coding, testing, and operation/maintenance. Common models include waterfall, prototyping, spiral, and rapid application development (RAD). Waterfall is classical but inflexible, while prototyping allows customer feedback. Spiral reduces risks through iterations. RAD emphasizes reuse and rapid iterations. The conclusion recommends the RAD model for mashup development due to its speed, customer involvement, and support for modularized, multi-platform work.
Software Development Life Cycle (SDLC)
The document discusses different software development life cycle (SDLC) models including waterfall, spiral/iterative, and agile. It provides an overview of each model's phases and when they are best applied. The waterfall model follows sequential phases from requirements to maintenance. The spiral model is risk-driven and iterative. The agile model emphasizes speed, reduced documentation, and frequent customer feedback through shorter development cycles. SDLC models provide structure, standard processes and deliverables to software development projects.
Sdlc models
The document discusses several software development life cycle (SDLC) models: Waterfall, V-shaped, structured evolutionary prototyping, rapid application development (RAD), incremental, and spiral. For each model, it describes the key steps, strengths, weaknesses, and scenarios where the model is best applied. The Waterfall model involves sequential phases from requirements to maintenance, while the V-shaped model adds verification and validation phases. Structured evolutionary prototyping uses iterative prototyping for requirements gathering. RAD emphasizes rapid delivery through time-boxing and productivity tools. Incremental development prioritizes requirements delivery in groups. The spiral model incorporates risk analysis, prototyping, and iterative cycles.
PROTOTYPE MODEL
A prototype model is system development life cycle (SDLC) model used by companies in information system department.
Software Engineering : Requirement Analysis & Specification
The document discusses requirements analysis and specification in software engineering. It defines what requirements are and explains the typical activities involved - requirements gathering, analysis, and specification. The importance of documenting requirements in a Software Requirements Specification (SRS) document is explained. Key sections of an SRS like stakeholders, types of requirements (functional and non-functional), and examples are covered. Special attention is given to requirements for critical systems and importance of non-functional requirements.
Rad model
Rapid Application Development (RAD) is an agile software development methodology that focuses on rapid prototyping through workshops and iterative testing with customers. It involves business modeling to identify information flows, data modeling to define necessary data objects, and process modeling to convert data objects into business processes. Automated tools are then used to generate code from the models. The RAD model aims to reduce development time through reusability, early customer feedback, and short iteration cycles enabled by powerful modeling and code generation tools. However, it relies on strong individual performances, is only suitable for modularized systems, and requires high modeling and development skills.
Software architecture design ppt
The document discusses software architecture design. It defines software architecture as the structure of components, relationships between components, and properties of components. An architectural design model can be applied to other systems and represents predictable ways to describe architecture. The architecture represents a system and enables analysis of effectiveness in meeting requirements and reducing risks. Key aspects of architectural design include communication between stakeholders, controlling complexity, consistency, reducing risks, and enabling reuse. Common architectural styles discussed include data-centered, data flow, call-and-return, object-oriented, and layered architectures.
List of Software Development Model and Methods
RiantSoft a Software Development Company derived the most useful and different types of Software Development Model for the users who want to know the development process. RiantSoft is specialized in custom software development with latest cutting edge technologies.
Software development life cycle (SDLC)
The document defines the software development life cycle (SDLC) and its phases. It discusses several SDLC models including waterfall, prototype, iterative enhancement, and spiral. The waterfall model follows sequential phases from requirements to maintenance with no overlap. The prototype model involves building prototypes for user feedback. The iterative enhancement model develops software incrementally. The spiral model is divided into risk analysis, engineering, construction, and evaluation cycles. The document also covers software requirements, elicitation through interviews and use cases, analysis through data, behavioral and functional modeling, and documentation in a software requirements specification.
UML
UML (Unified Modeling Language) is a standard language for specifying, visualizing, and documenting software systems. It uses various diagrams to model different views of a system, such as structural diagrams (e.g. class diagrams), behavioral diagrams (e.g. sequence diagrams), and deployment diagrams. The key building blocks of UML include things (classes, interfaces, use cases), relationships (associations, generalizations), and diagrams. UML aims to provide a clear blueprint of software systems for both technical and non-technical audiences.
Requirements prioritization
Requirement prioritization is used in Software product management for determining which candidate requirements of a software product should be included in a certain release. Requirements are also prioritized to minimize risk during development so that the most important or high risk requirements are implemented first. Several methods for assessing a prioritization of software requirements exist.
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The document discusses the RAD model and prototyping. The RAD model is an incremental software development process where components are developed in parallel. It has four phases: requirements planning, user design, construction, and cutover. Prototyping involves creating initial versions of the system to get user feedback and evolve the design before full development. There are two types of prototypes: throwaway prototypes that are not part of the final system, and evolutionary prototypes that are iteratively improved based on user feedback.
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Software Development Model - Waterfall, RAD & Agile
Year 3, Term 1 presentation of Large Scale course, entitled Software Development Model - Waterfall, RAD & Agile
Rapid application development
The Rapid Application Development (RAD) model is an incremental software development approach where components are developed in parallel like mini-projects. It focuses on quickly delivering a working prototype to users for early feedback. The RAD process involves requirements planning, user design, construction, and cutover stages. It is best for modularized systems that need to be created quickly within 2-3 months when high-skilled designers and adequate budget are available for modeling and code generation. Key benefits are reduced time-to-market and early user reviews, while high dependency on modeling skills is a disadvantage.
Prototype model
The document discusses the prototyping model of software development. It describes prototyping as building a toy or crude initial version of the software to get early user feedback before developing the actual system. The key steps are requirements gathering, quick design, building the prototype, user evaluation and refinement, then iterative development and engineering of the final product. Advantages include early user assessment, gaining insight, and clarifying requirements. Disadvantages include the potential for increased time/costs if multiple prototypes are needed and losing focus on quality.
1 rapid prototyping model
Rapid prototyping is a process that involves quickly building a prototype or working model to test design features, ideas, concepts, functionality, output, and performance before fully developing the final product. It originated in the late 1960s and became more accessible in the 1980s. Rapid prototyping decreases development time by allowing for early corrections and has advantages like increasing variants, complexity, communication and decreasing delivery times and costly mistakes. However, it can fail to replicate the real product and overlook problems, requiring endless revisions. The rapid prototyping process involves analyzing requirements, identifying objects and actions, organizing them logically, getting feedback, and iterating the prototype-feedback cycle until customers are satisfied before final development.
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This document provides an overview of agile methodology and compares it to traditional waterfall development. It describes waterfall development as a sequential process with distinct phases completed one after another. Agile approaches like Scrum and Kanban are presented as more iterative and adaptive alternatives that focus on delivering working software frequently in short cycles through self-organizing cross-functional teams. Key aspects of Scrum like sprints, daily stand-ups, and product backlogs are defined. Kanban emphasizes visualizing and limiting work in progress to optimize flow. Both aim to incorporate feedback and respond rapidly to changes over rigidly following pre-defined plans.
Incremental model presentation
Here is a simple presentation on the Incremental model, You can get the definition, usage, advantages and disadvantages with examples.
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The document discusses the spiral model of software development. The spiral model is an iterative approach that combines prototyping and aspects of the waterfall model. It was defined by Barry Boehm in 1988 as a way to address risks through iterative evaluation and improvement of prototypes. The spiral model is best for medium to high risk projects where requirements are complex or expected to change. It involves evaluating prototypes, defining new prototypes based on learnings, and repeating this process until the final product is delivered.
Prototype Model
The document discusses prototype modeling. A prototype is a preliminary model or version of a final product that is created to test concepts or processes. There are several types of prototyping including throwaway, evolutionary, incremental, and extreme prototyping. The prototype modeling process involves requirements gathering, quick design, building the prototype, customer evaluation, review and updates. Prototypes allow users to provide feedback early in the development process and help reduce costs, time, and risks.
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Incremental
The incremental model divides a project into a series of increments. Each increment follows the waterfall model by going through planning, modeling, design, construction, testing, and deployment phases to deliver working functionality. As increments are completed, the working system is expanded until the full system is implemented. This allows software to be delivered in early increments while maintaining flexibility to change scope over the course of the project. However, problems can arise if not all requirements are identified upfront.
Software cycles
The document provides details about the waterfall model of software development. It discusses the history and key phases of the waterfall model including requirement gathering and analysis, design, coding, testing, and maintenance. It also outlines the advantages and disadvantages of the waterfall model such as it being easy to implement but inflexible to changes. Overall, the document gives an overview of the waterfall model software development lifecycle.
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Apt sdlc
The document discusses various software development life cycles (SDLC), including:
- The waterfall model, which progresses through sequential phases from requirements to maintenance. It emphasizes documentation but lacks flexibility.
- Rapid application development (RAD), which uses iterative prototyping to speed development but can compromise quality.
- The spiral model, which is iterative and emphasizes risk analysis, making it suitable for large, complex projects.
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ITFT - Software prototyping
Software prototyping is the process of implementing presumed software requirements to learn more about actual requirements or alternative designs. It has several phases: requirements gathering, quick design, building a prototype, user evaluation, refining the prototype, and engineering the final product. Prototyping allows for early assessment of requirements, increased user confidence, and insight for better implementation. However, it can be time consuming and expensive if many iterations are needed to satisfy the user. It also risks losing development focus or creating false expectations.
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Software Development Model - Waterfall, RAD & Agile
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Similar to Rapid application development model
rad.pptx
The document discusses Rapid Application Development (RAD), an incremental software development model. RAD involves developing components in parallel like mini-projects on a compressed timeline. This allows delivering a working prototype quickly for user feedback. The RAD process includes requirements planning, user design of prototypes using tools, rapid construction, and cut over stages. RAD works well for modularized systems that can be built within 2-3 months when designers, tools, and business experts are available. It reduces time and encourages feedback, though it requires strong teams and modeling skills.
Selection of methodology - System Analysis and Design
Its all about Selections of methodology and comparison of waterfall model vs rapid application development.
Rapid application development
The RAD (Rapid Application Development) model was proposed in the early 1990s to overcome the rigidity of the waterfall model. In RAD, prototypes are constructed and incrementally improved features are delivered to customers for feedback. Development occurs in short iterative cycles where a prototype for some functionality is developed, evaluated by customers, and refined based on their feedback. This decreases development time and costs while increasing flexibility to incorporate changes requested by customers. RAD is applicable for customized software, non-critical software, or projects with constrained schedules, but not for generic products, situations without similar existing products, or software that cannot be easily divided into incremental parts.
Rapid application development
Rapid Application Development (RAD) is an incremental model that focuses on delivering working software to users quickly by devoting less time to planning and more time to development. User needs are converted to design using joint application development techniques and case tools. The model gathers feedback from each development cycle to refine requirements and design. Key advantages include completing projects on time and within budget, improving quality, and decreasing development time by identifying problems early. However, it requires more experienced resources and has a larger resource requirement due to working on requirements and development simultaneously.
Module-02.pptx
The document discusses various software development models including waterfall, RAD, spiral, V-model, incremental, agile, iterative models. It provides details on when each model should be used, advantages and disadvantages of each model. It also discusses software quality management, ISO 9000 certification, CMMI, six sigma and various software project planning topics like cost estimation models, COCOMO model etc. The key project planning activities covered are software estimation, scheduling, monitoring and risk management.
Employee Management Process (Engineering Model)
Main goal of this practical is to finalize the Design and Implementation model from the different Software Engineering Models.
Issues in Rapid Application Development
This document discusses issues in rapid application development. It outlines some general characteristics of RAD including the usage of specialized support tools like visual development tools, APIs, version control tools, and content management systems. It also discusses strategies like time boxing, iterative evolutionary prototyping, and joint application development meetings. The document then covers dimensions that impact speed like people, process, product, and technology. It analyzes advantages and disadvantages of the RAD approach and when RAD is most suitable versus when it may fail. Finally, it discusses the importance of customer involvement in RAD projects.
System development methodologies L2.ppt
The document discusses various software development life cycle (SDLC) models including waterfall, V-shaped, prototyping, rapid application development (RAD), incremental, spiral, and agile models. It provides details on the key steps, strengths, weaknesses, and scenarios for using each model. It also discusses quality assurance plans and techniques to ensure quality like defect tracking, unit testing, code reviews, integration testing, and system testing.
Session2.ppt
The document discusses several software development life cycle (SDLC) models including the Capability Maturity Model (CMM), Waterfall model, V-shaped model, Rapid Application Development (RAD) model, Incremental model, and Spiral model. It provides an overview of the key stages and characteristics of each model as well as their strengths and weaknesses to help determine when each model is best applied.
ddd.ppt
The document discusses various software development life cycle (SDLC) models including waterfall, V-shaped, prototyping, rapid application development (RAD), incremental, spiral, and agile models. For each model, the key steps or phases are described along with strengths and weaknesses. When each model is most applicable is also discussed. The document then covers quality assurance planning and activities that should be included like defect tracking, testing at various levels, and technical reviews.
Session2.pptx.ppt
The document discusses several software development life cycle (SDLC) models including the Capability Maturity Model (CMM), Waterfall model, V-shaped model, Rapid Application Development (RAD) model, Incremental model, and Spiral model. It provides an overview of the key stages and characteristics of each model as well as their strengths and weaknesses to help determine when each model is best applied.
Session2 (1).ppt
The document discusses several software development life cycle (SDLC) models including the Capability Maturity Model (CMM), Waterfall model, V-shaped model, Rapid Application Development (RAD) model, Incremental model, and Spiral model. It provides an overview of the key stages and characteristics of each model as well as their strengths and weaknesses to help determine when each model is best applied.
SDLC.ppt
The document discusses various software development life cycle (SDLC) models including waterfall, V-shaped, prototyping, rapid application development (RAD), incremental, spiral, and agile models. For each model, the key steps or phases are described along with strengths and weaknesses. When each model is most applicable is also discussed. The document then covers quality assurance planning and activities that should be included like defect tracking, testing at various levels, and technical reviews.
SDLC.PPT
The document discusses various software development life cycle (SDLC) models including waterfall, V-shaped, prototyping, rapid application development (RAD), incremental, spiral, and agile models. For each model, the key steps or phases are described along with strengths and weaknesses. When each model is most applicable is also discussed. The document then covers quality assurance and the importance of having a quality assurance plan that includes elements like defect tracking, testing at various stages of development, and code reviews.
Session2.ppt
The document discusses several software development life cycle (SDLC) models including the Capability Maturity Model (CMM), Waterfall model, V-shaped model, Rapid Application Development (RAD) model, Incremental model, and Spiral model. It provides details on the key steps and phases in each model as well as their strengths and weaknesses. The models range from traditional plan-driven approaches like Waterfall to more iterative approaches like RAD and Spiral that allow for user feedback and adjustments throughout the process.
Session2.ppt
The document discusses various software development life cycle (SDLC) models including waterfall, V-shaped, prototyping, rapid application development (RAD), incremental, spiral, and agile models. For each model, the key steps or phases are described along with strengths and weaknesses. When each model is most applicable is also discussed. The document then covers quality assurance planning and activities that should be included like defect tracking, testing at various levels, and technical reviews.
Session2.ppt
The document discusses various software development life cycle (SDLC) models including waterfall, V-shaped, prototyping, rapid application development (RAD), incremental, spiral, and agile models. For each model, the key steps or phases are described along with strengths and weaknesses. When each model is most applicable is also discussed. The document then covers quality assurance planning and activities that should be included like defect tracking, testing at various levels, and technical reviews.
presentation ofSoftware Development Life Cycle (SDLC)
presentation ofSoftware Development Life Cycle (SDLC)
System Development Life Cycle Models
The document discusses various software development life cycle (SDLC) models including waterfall, spiral, prototype, RAD, and agile. It provides details on the phases and processes involved in each model as well as their advantages and disadvantages. The document recommends the agile model for ABC Campus given its iterative approach, frequent delivery of working software, and ability to adapt to changing requirements - making it a good fit for the campus' higher education programs and collaboration with the private sector. Reasons for avoiding other models like waterfall, spiral, prototype and RAD are also provided.
RAD.pptx
The document discusses the Rapid Application Development (RAD) model for software development. RAD emphasizes a concise development cycle using element-based construction. It gathers requirements through workshops and prototypes designs early for user testing. RAD allows for flexibility and quick adoption of changes. However, it requires highly skilled designers and user involvement, and may not be suitable for smaller or high-risk projects.
Similar to Rapid application development model (20)
Selection of methodology - System Analysis and Design
Selection of methodology - System Analysis and Design
presentation ofSoftware Development Life Cycle (SDLC)
presentation ofSoftware Development Life Cycle (SDLC)
More from Vaibhav Dash
Why need software testing
Testing software is necessary for several reasons: software has become important in personal and business use but defects can enter through human mistakes or external factors; testing finds both functional and non-functional defects to ensure legal compliance, quality, and on-time project delivery; and testing verifies that critical applications with life-dependent software and artificial intelligence meet customer expectations and are free of defects.
What is testing
Testing involves all activities before and after test execution to find faults in software and gain confidence in a product. The objectives of testing change during different phases of software development, maintenance, and acceptance testing. Debugging is distinct from testing as testing provides customers a clear picture of their software's progress.
Waterfall model
The Waterfall model is a sequential development process where progress flows in one direction like a waterfall from conception to maintenance. It works best for projects with stable requirements over a short duration, as documentation and milestones are clearly defined at each stage from requirements to testing. However, the Waterfall model is not suitable for projects where requirements may change, as it is difficult to measure progress or make changes without restarting the entire process, and testing only occurs late.
V model
The V-Model is a software development lifecycle model that structures testing activities in parallel to steps in the design process. It extends the waterfall model by performing testing at each development stage in both forward and reverse direction. This allows bugs to be found early and defects to be tracked proactively. The V-Model follows a strict process to develop quality software and constantly measures productivity through test case creation and coverage. However, it requires significant resources and money, and changes midway require updating documentation.
Types of test tools
The document discusses various types of test tools used at different stages of testing. It describes tools for test management, requirements management, incident management, configuration management, static testing, static analysis, modeling, test design, test data preparation, test execution, test harness, test comparators, coverage measurement, security testing, dynamic analysis, performance testing, load testing, stress testing, monitoring and thanks the reader. The tools support activities like scheduling tests, tracking bugs, reviewing code, generating test data, automating test execution, measuring code coverage and monitoring system performance.
Types of reviews
There are four main types of reviews discussed: walkthroughs, technical reviews, inspections, and success factors for reviews. Walkthroughs are led by the author and aim to give all reviewers a common understanding of high-level documents. Technical reviews focus on technical content and involve peer review. Inspections are the most formal type of review with proper logging and trained moderators. Key success factors for effective reviews include finding a champion, explicitly planning activities, training participants, and continuously improving processes.
The psychology of testing
The document discusses the psychology of testing and outlines 4 key points. It notes that developers and testers have different mindsets, with developers focusing on construction and testers on destruction. It also discusses the level of independence in testing from self-testing to external testing. Additionally, the document stresses the importance of constructive communication when reporting defects. Finally, it emphasizes that both testers and developers work towards the shared goal of product quality.
Test progress, monitoring and control
Monitoring test activities provides visibility into progress and gathers data to track testing metrics. Reports display executed test cases, defects, and effort over time to determine when exit criteria is met. These reports are shared to stakeholders through charts and graphs to discuss test objectives and results. Test control is needed as projects rarely go as planned, requiring adjustments to testing timelines, environments, and iterations to accommodate issues like delays, shifted requirements, or higher defect rates.
Test organization
The document discusses test organization and independent vs integrated testing. It notes that independent testing can bring more defects to light but risks isolation from other teams. Independent testing may be seen as overhead. The document also discusses the roles of test leaders and testers, and defines important skills for test staff, including application domain knowledge, technology skills, and testing expertise. Most projects fail when focus is not on testing.
System testing
System testing occurs after integration testing and before acceptance testing. It tests the entire system as a whole to verify that it meets specifications. The goal is to find defects by testing both functional and non-functional requirements through scenarios using the whole system in a controlled environment similar to production.
Structure testing
White box testing, also called glass box or transparent testing, involves testing the internal structure or code of a system. It requires knowledge of the system's code and tests each statement, branch, and path of the code. Statement coverage tests that each statement is executed at least once, branch coverage tests all possible outcomes of conditions, and path coverage tests all possible paths through the code. Together these coverage types aim to thoroughly test the internal logic and functionality of the system.
Static testing
Static testing is a verification process that finds defects early without executing code. It includes reviews of documents, code, and designs to identify issues like missing requirements, inconsistencies, and non-maintainable code. While it doesn't replace dynamic testing, static testing helps reduce costs, improve understanding between team members, and catch defects earlier in the development process through techniques like reviewing and walkthroughs.
Static analysis by tools
Static analysis tools can help improve code quality by detecting errors early. They are used by developers before and during testing to check for issues related to coding standards, code complexity metrics, code structure, and unused code. Static analysis of 1,000 lines of code can find many errors that cannot be uncovered through dynamic testing alone. This allows developers to focus more on program logic.
Specification based (black-box) testing techniques
The document discusses different types of specification-based or black-box testing techniques. It describes equivalence partitioning which involves testing one condition from each partition of similar inputs. Boundary value analysis tests at the boundaries between partitions. Decision tables test business logic by identifying input combinations and determining outcomes. State transition testing is used when a system can be in different states and the transitions between states are determined by rules.
Seven testing principles
The document outlines 7 testing principles: 1) Testing finds defects but finding none does not mean none exist, 2) Exhaustive testing is impossible so smarter testing is needed, 3) Early testing saves time and money and makes customers happy, 4) Defects tend to cluster together, 5) Test cases must be updated periodically to avoid outdated "pesticide" tests, 6) Testing methods vary depending on the software context, and 7) Software should be stable before testing to avoid false negatives from instability.
Roles and responsibilties in reviews
The document outlines the roles and responsibilities in reviews including the moderator, author, scribe, reviewers, and manager. The moderator leads the review process and coordinates with the author. The author is responsible for the document under review and improving it based on feedback. The scribe logs all defects and feedback during the meeting. Reviewers find defects before the meeting and provide technical feedback. The manager decides how reviews are executed and may also act as a reviewer.
Risk & testing
The document discusses different types of risks in testing including product risks, project risks, and ways to deal with risks. Product risks refer to risks that the software may not meet customer expectations or behave abnormally. Project risks relate to factors that could affect the test project delivery or environment. Both product and project risks should be identified early from requirements and previous projects. A risk mitigation plan is also needed to address potential risks like ensuring skilled resources, handling new defects, preparing for natural disasters, and resources leaving the project.
Phases of review
The document outlines the phases of a review process: planning, preparation, kick-off meeting, review meeting, rework, and follow-up. It describes the key activities in each phase, including defining entry/exit criteria, checking documents for defects, logging issues, making decisions on defects, reworking documents based on feedback, and following up to ensure all defects were addressed. The overall process is meant to thoroughly examine documents for errors, standards compliance, and testability through group discussion and iterative improvement cycles.
Non functional testing
Non-functional testing checks how well a product works by focusing on characteristics like reliability, usability, efficiency, maintainability, and portability. It tests customer expectations and includes performance testing to check a system's speed, load testing to see how it behaves under normal and peak usage, stress testing beyond its capabilities, and usability, reliability, and portability testing.
Maintenance testing
Maintenance testing involves testing software changes and enhancements to ensure they do not impact existing functionality. It has two parts - changes are tested thoroughly and regression testing is done to check for unintended consequences. Test cases, plans and reports are updated and preserved along with any changes to requirements or specifications. There are two types of modifications - planned, like adding features or fixing defects; and ad-hoc for immediate issues.
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Rapid application development model
- 1. RAPID APPLICATION DEVELOPMENT MODEL - RAD http://appium-selenium.com/
- 2. • It is a type of incremental model • RAD model used to delivery software early to users • RAD model devotes less time on planning and more time on development • Knowledge gathered from the development is used as feed back for requirements and design • RAD uses a combination of Joint Application Development (JAD) techniques and CASE tools to convert user needs to designs • System developers and users work together http://appium-selenium.com/
- 4. •More projects completed on time and within budget •Better Quality •Decrease time for development •RAD is able to identify problem during early phase of development •Development in RAD model is fast •Project are completed within budget Advantages of RAD Model http://appium-selenium.com/
- 5. •More effort from resources are required because they are working with requirements and development both. •Experienced resources required as new tools and requirement and always rethinking is required •Poor designing as developer only concern about small changes Dis-Advantages of RAD Model http://appium-selenium.com/