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.
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.
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.
This document discusses methods for rapid software development. It covers topics like agile methods, extreme programming, rapid application development, and software prototyping. Some key points made are:
- Rapid development is needed to quickly respond to changing business needs, even if it means lower initial quality.
- Agile methods focus on iterative development and early delivery of working software that can evolve rapidly based on changing requirements.
- Rapid application development uses tools that facilitate rapid creation of interfaces and reports linked to a database.
- Visual programming allows rapid prototyping through a graphical interface but can cause coordination and maintenance issues for large projects.
The document describes the Rapid Application Development (RAD) model. Some key points:
- RAD focuses on rapid prototyping and iterative development with minimal upfront planning. Requirements are gathered through workshops and prototypes are tested by customers.
- It involves developing modular functional prototypes in parallel that are then integrated into a complete product, allowing for faster delivery.
- RAD projects have small cross-functional teams working incrementally on prototypes to refine requirements through customer feedback on working models.
The spiral model is a software development process that combines elements of both design and prototyping-centric models. It involves iterating through four phases - planning, risk analysis, engineering, and evaluation - with each iteration intended to incrementally approach completion of the project. The spiral model aims to reduce risk at each phase by gathering user feedback and requirements and addressing risks before proceeding. It is suited for large, complex projects where requirements are not fully known. An example is a project creating a video mail system for illiterate users through iterative user testing and feedback.
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.
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.
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.
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.
This document discusses methods for rapid software development. It covers topics like agile methods, extreme programming, rapid application development, and software prototyping. Some key points made are:
- Rapid development is needed to quickly respond to changing business needs, even if it means lower initial quality.
- Agile methods focus on iterative development and early delivery of working software that can evolve rapidly based on changing requirements.
- Rapid application development uses tools that facilitate rapid creation of interfaces and reports linked to a database.
- Visual programming allows rapid prototyping through a graphical interface but can cause coordination and maintenance issues for large projects.
The document describes the Rapid Application Development (RAD) model. Some key points:
- RAD focuses on rapid prototyping and iterative development with minimal upfront planning. Requirements are gathered through workshops and prototypes are tested by customers.
- It involves developing modular functional prototypes in parallel that are then integrated into a complete product, allowing for faster delivery.
- RAD projects have small cross-functional teams working incrementally on prototypes to refine requirements through customer feedback on working models.
The spiral model is a software development process that combines elements of both design and prototyping-centric models. It involves iterating through four phases - planning, risk analysis, engineering, and evaluation - with each iteration intended to incrementally approach completion of the project. The spiral model aims to reduce risk at each phase by gathering user feedback and requirements and addressing risks before proceeding. It is suited for large, complex projects where requirements are not fully known. An example is a project creating a video mail system for illiterate users through iterative user testing and feedback.
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.
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.
The document discusses the waterfall model and rapid application development (RAD) model for software development. The waterfall model is a sequential process where each phase must be completed before moving to the next. RAD is an adaptation of the waterfall model aimed at faster development through iterative cycles. It focuses on input/output and uses tools like case tools, data dictionaries, and storyboards. The document outlines the phases, advantages, and disadvantages of each model.
Rapid Application Development (RAD) is an agile software development methodology that emphasizes iterative development, user involvement, and rapid prototyping. It comprises four main phases: requirements planning, user design, construction, and cutover. RAD aims to significantly reduce development time compared to traditional models by encouraging continuous user feedback and integration from the beginning. However, it also requires highly skilled developers and designers as well as strong modeling capabilities.
This document summarizes two software development models: the waterfall model and the RAD (Rapid Application Development) model. The waterfall model is described as a sequential process that begins with analysis and progresses through subsequent phases of design, implementation, testing, and maintenance. Some advantages are provided but also limitations around inflexibility. The RAD model is then introduced as a variation that emphasizes short development cycles through concurrent processing and component-based construction.
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.
The document discusses the Rapid Application Development (RAD) model. It describes the RAD model as an incremental development model where components are developed in parallel as mini-projects and delivered quickly to get early customer feedback. The phases of the RAD model include business modeling, data modeling, process modeling, application generation, and testing. The RAD model aims to reduce development time, increase reusability, and encourage early customer feedback through quick iterations. However, it requires highly skilled developers and designers and is costly to implement.
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.
The document provides an overview of various software development processes and models, including traditional waterfall and iterative models as well as agile methods like Scrum and Extreme Programming (XP). It discusses key aspects of each approach such as phases, roles, meetings, practices, and values. The document aims to introduce different process options and considerations for developing software.
Rapid Application Development SimplifiedSanjay Patel
Today software development techniques and open source has advanced to such an extent that RAD is really powerful. But at the same time, RAD is complex. This presentation discusses about a simplified approach to RAD.
The spiral model combines elements of design and prototyping in iterative stages to incorporate advantages of top-down and bottom-up approaches. It explicitly manages risks and refines requirements, design, and implementation through iterations. Each iteration involves planning, risk assessment, prototyping, and evaluation. The model progresses through envisioning, planning, developing, stabilizing, and deploying phases in each iteration.
Spiral Model - Software Development Life Cycle (SDLC)ACM-KU
This presentation is about Spiral Model in Software Development models. It includes all of it a bit of it's antiquity, its phases and all the important features.
The document discusses various software development life cycle (SDLC) models. It describes the phases of SDLC as requirements gathering and analysis, design, development, testing, implementation, and maintenance. Several common models are explained in detail, including the waterfall model, prototyping model, incremental model, and spiral model. The waterfall model follows a sequential process from requirements to maintenance, while other iterative models allow for more customer feedback and flexibility to change requirements over multiple iterations of development. Choosing the appropriate model depends on factors like project risks, requirements stability, and need for early delivery of basic functionality.
The document discusses the System Development Life Cycle (SDLC), which is a standard model used worldwide to develop software. It describes the main stages of the SDLC as analysis, planning, implementation, and testing. Analysis is the first and most important phase where requirements are determined and the problem is broken down. Planning involves assigning tasks to team members. Implementation is the longest and most expensive phase. Testing is an ongoing phase where thorough testing takes place. The document also discusses various SDLC models including waterfall, iterative enhancement, prototyping, spiral, build and fix, and rapid application development models.
software engineering (spiral process model)Khushbu SaLeem
The spiral model is a risk-driven process model for software development that combines elements of both iterative and sequential development. It consists of four phases - planning, risk analysis, engineering, and evaluation - that are repeated in iterations or spirals until the project is complete. Each spiral phase addresses a segment of the product and refines requirements and solutions developed in previous spirals. This allows for incremental refinement and development that takes into account customer feedback at each stage.
The document discusses several software development life cycle (SDLC) models including waterfall, iterative waterfall, V-shaped, RAD, incremental, spiral, and agile models. It also covers agile methods like Scrum and extreme programming. The document defines the capability maturity model (CMM) which measures an organization's software process maturity across five levels from initial to optimizing.
The document describes the waterfall model, a sequential software development process where progress flows in one direction from conception to maintenance. It involves requirements gathering, analysis, design, coding, testing, and release/maintenance phases, where each phase must be completed before the next begins. While it provides structure, the waterfall model works best for projects with stable requirements and is not suitable for dynamic or changing requirements.
Learn how and what is Spiral Model. This was made during 3RD Year. From Eastern Visayas State University - Main Campus, Tacloban City, Leyte, Philippines
CREATED BY:
Aguilar, Fatima Joy
Arpon, Benedict Julius Steven
Software Product Development - Simple Process flowSabina Siddiqi
The document outlines the steps for product development from requirements to deployment using an agile methodology. It describes defining a product vision and prioritizing features, then detailing the top ten features. Sprints involve developing code and fixes, testing, and potentially releasing updates. Timelines show requirements and planning, development, and QA cycles occurring in repeated sprints, with feedback informing future sprints.
The document discusses several software development process models including waterfall, iterative development, prototyping, RAD, spiral, RUP, and agile processes. The waterfall model is a linear sequential process while iterative development allows for incremental improvements. Prototyping allows users to provide early feedback. RAD combines waterfall and prototyping and emphasizes rapid development. Spiral model iterates through risk analysis, development, and planning phases. RUP is object-oriented and divided into cycles. Agile processes emphasize working software, incremental delivery, flexibility, and customer involvement.
The document provides an overview of the Agile methodology, including its history, principles, characteristics, and popular methods like Scrum and Extreme Programming (XP). It describes how Agile evolved in the 1990s as an alternative to heavyweight methods like the Waterfall model. Key aspects of Agile include iterative development, frequent delivery of working software, collaboration between self-organizing cross-functional teams, and responding to change over following a plan.
This is a demo presentation prepared for the recruitment of Lecturer in CSE at Green University. In this presentation, an introduction to Software Development Life Cycle is demonstrated in an intuitive way.
The document discusses the waterfall model and rapid application development (RAD) model for software development. The waterfall model is a sequential process where each phase must be completed before moving to the next. RAD is an adaptation of the waterfall model aimed at faster development through iterative cycles. It focuses on input/output and uses tools like case tools, data dictionaries, and storyboards. The document outlines the phases, advantages, and disadvantages of each model.
Rapid Application Development (RAD) is an agile software development methodology that emphasizes iterative development, user involvement, and rapid prototyping. It comprises four main phases: requirements planning, user design, construction, and cutover. RAD aims to significantly reduce development time compared to traditional models by encouraging continuous user feedback and integration from the beginning. However, it also requires highly skilled developers and designers as well as strong modeling capabilities.
This document summarizes two software development models: the waterfall model and the RAD (Rapid Application Development) model. The waterfall model is described as a sequential process that begins with analysis and progresses through subsequent phases of design, implementation, testing, and maintenance. Some advantages are provided but also limitations around inflexibility. The RAD model is then introduced as a variation that emphasizes short development cycles through concurrent processing and component-based construction.
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.
The document discusses the Rapid Application Development (RAD) model. It describes the RAD model as an incremental development model where components are developed in parallel as mini-projects and delivered quickly to get early customer feedback. The phases of the RAD model include business modeling, data modeling, process modeling, application generation, and testing. The RAD model aims to reduce development time, increase reusability, and encourage early customer feedback through quick iterations. However, it requires highly skilled developers and designers and is costly to implement.
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.
The document provides an overview of various software development processes and models, including traditional waterfall and iterative models as well as agile methods like Scrum and Extreme Programming (XP). It discusses key aspects of each approach such as phases, roles, meetings, practices, and values. The document aims to introduce different process options and considerations for developing software.
Rapid Application Development SimplifiedSanjay Patel
Today software development techniques and open source has advanced to such an extent that RAD is really powerful. But at the same time, RAD is complex. This presentation discusses about a simplified approach to RAD.
The spiral model combines elements of design and prototyping in iterative stages to incorporate advantages of top-down and bottom-up approaches. It explicitly manages risks and refines requirements, design, and implementation through iterations. Each iteration involves planning, risk assessment, prototyping, and evaluation. The model progresses through envisioning, planning, developing, stabilizing, and deploying phases in each iteration.
Spiral Model - Software Development Life Cycle (SDLC)ACM-KU
This presentation is about Spiral Model in Software Development models. It includes all of it a bit of it's antiquity, its phases and all the important features.
The document discusses various software development life cycle (SDLC) models. It describes the phases of SDLC as requirements gathering and analysis, design, development, testing, implementation, and maintenance. Several common models are explained in detail, including the waterfall model, prototyping model, incremental model, and spiral model. The waterfall model follows a sequential process from requirements to maintenance, while other iterative models allow for more customer feedback and flexibility to change requirements over multiple iterations of development. Choosing the appropriate model depends on factors like project risks, requirements stability, and need for early delivery of basic functionality.
The document discusses the System Development Life Cycle (SDLC), which is a standard model used worldwide to develop software. It describes the main stages of the SDLC as analysis, planning, implementation, and testing. Analysis is the first and most important phase where requirements are determined and the problem is broken down. Planning involves assigning tasks to team members. Implementation is the longest and most expensive phase. Testing is an ongoing phase where thorough testing takes place. The document also discusses various SDLC models including waterfall, iterative enhancement, prototyping, spiral, build and fix, and rapid application development models.
software engineering (spiral process model)Khushbu SaLeem
The spiral model is a risk-driven process model for software development that combines elements of both iterative and sequential development. It consists of four phases - planning, risk analysis, engineering, and evaluation - that are repeated in iterations or spirals until the project is complete. Each spiral phase addresses a segment of the product and refines requirements and solutions developed in previous spirals. This allows for incremental refinement and development that takes into account customer feedback at each stage.
The document discusses several software development life cycle (SDLC) models including waterfall, iterative waterfall, V-shaped, RAD, incremental, spiral, and agile models. It also covers agile methods like Scrum and extreme programming. The document defines the capability maturity model (CMM) which measures an organization's software process maturity across five levels from initial to optimizing.
The document describes the waterfall model, a sequential software development process where progress flows in one direction from conception to maintenance. It involves requirements gathering, analysis, design, coding, testing, and release/maintenance phases, where each phase must be completed before the next begins. While it provides structure, the waterfall model works best for projects with stable requirements and is not suitable for dynamic or changing requirements.
Learn how and what is Spiral Model. This was made during 3RD Year. From Eastern Visayas State University - Main Campus, Tacloban City, Leyte, Philippines
CREATED BY:
Aguilar, Fatima Joy
Arpon, Benedict Julius Steven
Software Product Development - Simple Process flowSabina Siddiqi
The document outlines the steps for product development from requirements to deployment using an agile methodology. It describes defining a product vision and prioritizing features, then detailing the top ten features. Sprints involve developing code and fixes, testing, and potentially releasing updates. Timelines show requirements and planning, development, and QA cycles occurring in repeated sprints, with feedback informing future sprints.
The document discusses several software development process models including waterfall, iterative development, prototyping, RAD, spiral, RUP, and agile processes. The waterfall model is a linear sequential process while iterative development allows for incremental improvements. Prototyping allows users to provide early feedback. RAD combines waterfall and prototyping and emphasizes rapid development. Spiral model iterates through risk analysis, development, and planning phases. RUP is object-oriented and divided into cycles. Agile processes emphasize working software, incremental delivery, flexibility, and customer involvement.
The document provides an overview of the Agile methodology, including its history, principles, characteristics, and popular methods like Scrum and Extreme Programming (XP). It describes how Agile evolved in the 1990s as an alternative to heavyweight methods like the Waterfall model. Key aspects of Agile include iterative development, frequent delivery of working software, collaboration between self-organizing cross-functional teams, and responding to change over following a plan.
This is a demo presentation prepared for the recruitment of Lecturer in CSE at Green University. In this presentation, an introduction to Software Development Life Cycle is demonstrated in an intuitive way.
SDLC - Software Development Life Cycle
and Waterfall Model :
The SDLC aims to produce a high quality software that meets or exceeds customer expectations, reaches completion within times and cost estimates.
The document provides information on Agile vs Waterfall methodologies for software development. It describes Agile as an iterative approach that values individuals, interactions, working software and responding to change over processes, tools, documentation and following a plan. Waterfall is described as a linear sequential process where each phase must be completed before the next can begin. The document outlines the phases and characteristics of both approaches and discusses their pros and cons for different project types.
The document provides an overview of traditional predictive and adaptive software development processes, including waterfall, iterative incremental, and spiral models. It then discusses agile software development processes like Scrum and extreme programming. Key aspects of each methodology are defined such as roles, meetings, user stories, and emphasis on rapid delivery through short iterations. Adaptive methods prioritize quickly adapting to changes while predictive methods focus on detailed long-term planning.
This document discusses DevOps, a methodology that combines software development (Dev) and IT operations (Ops). It describes how DevOps aims to improve collaboration between developers and operations teams to more quickly identify and solve problems, allowing for faster and more reliable software delivery. The document provides examples of how DevOps streamlines processes like continuous integration, delivery and deployment through automation and bringing the teams together into a single workflow.
complete information of SDLC modal and all steps and process we have to follow during the software development and information about waterfall model etc.
The document provides information about the Diploma in Software Engineering program. It outlines the intended learning outcomes, hours, and evaluation methods for the Programming Design Techniques and Programming course. Students will learn about programming languages, techniques, structured and object-oriented programming, and error handling. The course covers introduction to programming, programming language types, flowcharts, pseudocode, algorithms, and software development team roles.
From Sandbox to Production by Vadym FedorovSoftServe
This document discusses best practices for collaboration between development and operations teams. It notes that historically, development teams did not involve operations teams early enough in the process. This led to projects not being production-ready and knowledge not being transferred effectively. The document recommends keeping development, staging, and production environments as similar as possible. It also advocates using an "infrastructure as code" approach to automate environment setup and deployment. This helps improve project portability and continuity. Prototyping the production environment locally during development allows operations expertise to influence design decisions earlier.
1. The document discusses various software engineering process models including waterfall, prototyping, RAD, incremental, and spiral models. It describes the key phases and advantages/disadvantages of each.
2. It also covers system engineering and how software engineering occurs as part of developing larger systems. Business process engineering and product engineering are introduced for developing information systems and products respectively.
3. Key aspects of developing computer-based systems are outlined including the elements of software, hardware, people, databases, documentation and procedures.
The development process is an exciting and challenging process, however sooner or later a product need to be rollout on production environment. Often a development team in this moment opens a wonderful and a new world of the Ops. In my story, I want to share a few tips how to roll out successfully your product.
In this quality assurance training session, you will learn Introduction to Software Testing. Topics covered in this course are:
• SDLC and Quality Standard
• What is SDLC and Stages
• Phases of SDLC
• SDLC Models
To know more, visit this link: https://www.mindsmapped.com/courses/quality-assurance/software-testing-quality-assurance-qa-training-with-hands-on-exercises/
In this session you will learn:
SDLC and Quality Standard
What is SDLC and Stages?
Phases of SDLC
Design Types
SDLC Models
Waterfall Model
Spiral Model
V-Model
Big Bang Model
In this quality assurance training, you will learn SDLC. Topics covered in this session are:
• SDLC and Quality Standard
• What is SDLC and Stages
• Phases of SDLC
• SDLC Models
For more information, visit this link: https://www.mindsmapped.com/courses/quality-assurance/software-testing-training-beginners-and-intermediate-level/
This document provides an overview of software development lifecycle (SDLC) models and quality standards. It discusses the SDLC process including requirements, design, coding, testing, implementation, and maintenance phases. Several SDLC models are described - waterfall, V-model, spiral, agile, and big bang. Quality standards from ISO, CMMI, IEEE are also mentioned. The training agenda covers SDLC models, phases, and quality standards.
This document provides an overview of software development lifecycle (SDLC) models and quality standards. It discusses the SDLC process including requirements analysis, design, coding, testing, implementation, and maintenance. Several SDLC models are described - waterfall, V-model, spiral, agile, and big bang. Quality standards from ISO, CMMI, and IEEE are also mentioned. The document is intended as training material on SDLC and quality assurance.
In this session you will learn:
SDLC and Quality Standard
What is SDLC and Stages
Phases of SDLC
SDLC Models
For more information: https://www.mindsmapped.com/courses/quality-assurance/qa-software-testing-training-for-beginners/
Software Development Life Cycle – SDLC – Waterfall, Iterative, V, Spiral, and...Murageppa-QA
This document provides an overview of different software development life cycle (SDLC) models including Waterfall, Iterative, V-Model, Spiral, and Agile. It describes the key phases and characteristics of each model. For the Waterfall model, it outlines the sequential phases as well as advantages of being well documented and cost estimates being more accurate, and disadvantages of lack of feedback and inability to make changes late in the process. For the Agile model, it summarizes the Agile Manifesto values and principles of incremental, iterative development with a focus on customer collaboration and responding to change.
Andreas Schleicher presents PISA 2022 Volume III - Creative Thinking - 18 Jun...EduSkills OECD
Andreas Schleicher, Director of Education and Skills at the OECD presents at the launch of PISA 2022 Volume III - Creative Minds, Creative Schools on 18 June 2024.
A Visual Guide to 1 Samuel | A Tale of Two HeartsSteve Thomason
These slides walk through the story of 1 Samuel. Samuel is the last judge of Israel. The people reject God and want a king. Saul is anointed as the first king, but he is not a good king. David, the shepherd boy is anointed and Saul is envious of him. David shows honor while Saul continues to self destruct.
Elevate Your Nonprofit's Online Presence_ A Guide to Effective SEO Strategies...TechSoup
Whether you're new to SEO or looking to refine your existing strategies, this webinar will provide you with actionable insights and practical tips to elevate your nonprofit's online presence.
2. Copyright
This material is primarily for the use of Orange and
Bronze Software Labs, Inc.
No part of this material may be reproduced or
transmitted in any form or by any means, electronic or
mechanical, including photocopying, recording, or by any
information storage and retrieval system, without
permission in writing from the publisher.
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3. Overview
• Introduction to SDLC
• Types of Software Development Life Cycles
• Examples of Different Software Development Life
Cycles
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4. Introduction to SDLC
The Software Development Life Cycle is the process,
involving multiple stages (from establishing feasibility to
carrying out post-implementation reviews), used to
convert a management need into an application system,
which is custom-developed or purchased, or is a
combination of both.
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5. Introduction to SDLC
• SDLC is...
→ A model of a detailed plan on how to create, develop,
implement and deliver software
→ A complete plan outlining how a software will be born,
raised, and turned over to its eventual users
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6. Introduction to SDLC
• Basic Pattern of General Life Cycle Models:
→ Planning
→ Requirements Definition and Analysis
→ Design
→ Development
→ Integration and Testing
→ Implementation
• Each phase produces output (deliverables) that will be
the input to the next phase.
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8. Software Development Life Cycle Phases
• Planning
→ Helps the project team establish a bird's eye view of the
software to be built
→ Determines the basic project structure
→ Evaluates feasibility and risks involved in the project
→ Describes appropriate management and technical
approach to be taken
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9. Software Development Life Cycle Phases
• Outputs:
→ Goals and Objectives of the Project
→ Configuration Management Plan
→ Quality Assurance Plan
→ Project Plan and Schedule
• High-level estimates
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10. Software Development Life Cycle Phases
• Requirements Definition and Analysis
→ Goals are translated into a group of one or more
requirements
• Major functions / features
• Critical processes to be managed
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11. Software Development Life Cycle Phases
• Outputs:
→ Requirements document
→ Requirements traceability document
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12. Software Development Life Cycle Phases
• Design
→ Requirements identified are translated into design
→ Usually depicted or illustrated through the use of
diagrams and other supporting documents
• Ex. ERD, Activity Diagram, Tables of Business Rules
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13. Software Development Life Cycle Phases
• Outputs:
→ Design documents / diagrams
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14. Software Development Life Cycle Phases
• Development
→ Where design is translated into software artifacts
→ Results in a functional software that is traceable to the
requirements and design elements defined
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15. Software Development Life Cycle Phases
• Outputs:
→ Functional software
→ Test Plans / Test Cases
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16. Software Development Life Cycle Phases
• Integration and Testing
→ Software is migrated from development environment to
test environment
→ Execution of test cases / test suites
• Verify correctness and completeness of software
→ Preparation of cutover to production
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17. Software Development Life Cycle Phases
• Outputs:
→ Integrated software
→ Implementation plan
→ Acceptance plan
• UAT / Final suite of test cases
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18. Software Development Life Cycle Phases
• Implementation
→ Software is migrated to production environment
→ Initial production data is loaded to production
environment
→ All test cases are executed once again
• Verify correctness and completeness of software in
production environment
→ UAT must have satisfactory results before customer
formally accepts delivery
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19. Software Development Life Cycle Phases
• Outputs:
→ Production application
→ Completed acceptance test suite
→ UAT sign off between client and project team
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20. Types of Software Development Life Cycles
• Sequential Development
• Iterative and/or Incremental Development
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21. Types of Software Development Life Cycles
• Sequential Development
→ A development strategy wherein a strict set of
development phases or stages is followed in a
sequential or linear order.
→ Only when one phase or stage is completed can
development move on to the succeeding phase or
stage.
→ Sometimes referred to as a classical or traditional
method of software development
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22. Types of Software Development Life Cycles
Incremental development is distinctly different from
iterative development in its purpose and also from its
management implications. Teams get into trouble by
doing one and not the other, or by trying to manage
them the same way.
– Alistair Cockburn (2008)
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23. Types of Software Development Life Cycles
Definition:
• Incremental development is a strategy for staging and
scheduling the integration of the different parts of a
system being developed. Each part of the system is
developed at its own time or pace and are then
integrated as they are completed.
→ The word increment fundamentally means “add onto”
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24. Types of Software Development Life Cycles
Definition:
• Iterative development is a strategy for scheduling a
certain amount of time for rework or revisions in order
to improve the quality of the different parts of the
system being built.
→ The word iterate fundamentally means “re-do”
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25. SDLC Examples
• Waterfall Model
• Rapid Application Development (RAD)
• Spiral Model
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27. Waterfall Model
• Characteristics
→ Phases are executed in sequential order
→ Each phase must be completed before proceeding to
the next
→ A formal review is conducted at the end of each phase
to determine completion
→ No overlap between phases
→ Software is not seen until the end of the project
→ Changes are limited and tightly controlled
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28. Waterfall Model
• Phases
→ Requirements Specification
→ Design
→ Construction / Implementation / Coding
→ Integration
→ Testing and Debugging / Verification
→ Installation
→ Maintenance
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29. Waterfall Model
• Advantages
→ Puts emphasis on documentation
→ Straightforward and more disciplined approach
→ Provides a structured approach
→ Provides easily markable milestones
→ Generally suited for stable projects
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30. Waterfall Model
• Criticism / Disadvantages
→ Rigid structure
→ Impossible to achieve perfection
→ “Measure twice, cut once” does not always work
→ Planning control and risk management are not covered
within the model
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31. Waterfall Model
• Criticism / Disadvantages
→ Very specific skill sets required for each phase
→ High amounts of risk and uncertainty
→ Poor model for:
• Complex and object-oriented projects
• Long and ongoing projects
• Projects where requirements are at a moderate to high
risk of changing
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33. Rapid Application Development (RAD)
• Characteristics
→ Iterative development through prototyping
→ Iterative and incremental
→ Aimed at speeding up application development
→ Compromises functionality and performance in
exchange for faster development
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34. Rapid Application Development (RAD)
• Phases
→ Requirements Planning
→ User Design
→ Construction /
Development
→ Cutover / Deployment
→ Learning
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35. Rapid Application Development (RAD)
• Advantages
→ Fast and efficient way of delivering software
→ Generally improves:
• User-Designer communication
• User cooperation
• User commitment
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36. Rapid Application Development (RAD)
• Criticism / Disadvantages
→ The process may become so fast that proper testing
(especially security testing) may not be done
→ Prototypes delivered may not always result in a
production application
→ Quality indicators such as consistency, standardization,
reusability, and reliability are easily overlooked
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38. Spiral Model
• Characteristics
→ Iterative model with emphasis on risk analysis
→ Combines elements of design and prototyping-in-stages
→ Aims to combine advantages of top-down and bottom-
up concepts
→ Intended for large, expensive and complex projects
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39. Spiral Model
• Phases
→ Planning
• Determine objectives, alternatives, and constraints
→ Risk Analysis
• Identify and resolve risks
• Evaluate possible alternatives
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40. Spiral Model
• Phases
→ Engineering
• Develop deliverables
→ Evaluation
• Verify that deliverables are correct
• Plan the next iteration
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41. Spiral Model
• Advantages
→ High amount of risk analysis
→ Good for large and mission-critical projects
→ Software is produced early
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42. Spiral Model
• Criticism / Disadvantages
→ Can be costly
→ Risk analysis requires high expertise
→ Success is highly dependent on risk analysis
→ Does not work well with smaller projects
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43. References
• Lewallen, R. (2005, July 13). Software Development Life
Cycle Models. Message posted to
http://codebetter.com/blogs/raymond.lewallen/archive/20
• Becerra, G. (2004). Software Life Cycle: Theory and
Summary. Retrieved from
http://pages.cpsc.ucalgary.ca/~ayala/SENG/seng611/Assign
• Purcell, J. (2007). Comparison of Software
Development Life Cycle Methodologies. Retrieved from
http://www.giac.org/resources/whitepaper/application/21
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44. References
• Davis, W. S., Yen, D. C. (1998). Rapid Application
Development (RAD). In The Information Systems:
Analysis and Design. Retrieved August 6, 2008, from
http://www.hit.ac.il/staff/leonidM/information-systems/ch
• Cockburn, A. (2008). Using Both Incremental and
Iterative Development. CrossTalk The Journal of
Defense Software Engineering, May 2008 Issue.
Retrieved April 11, 2008, from
http://www.stsc.hill.af.mil/crosstalk/2008/05/0805Cockbur
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45. References
• Steele, J. (2001). The Software Development Life Cycle
(SDLC). Retrieved from
http://www.elucidata.com/refs/sdlc.pdf
•
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