Waterfallmodelppt final-140209060959-phpapp01
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The document describes the waterfall model of software development. It begins by listing some common SDLC models: sequential, incremental, waterfall, V-model, spiral model, and RAD model. It then focuses on describing the waterfall model. Key points: - The waterfall model is a linear sequential approach where each phase must be completed before the next begins. - It provides structure for inexperienced teams but is only suitable for small, stable projects with well-defined requirements. - The model has distinct phases for requirements gathering, design, implementation, testing, and deployment.
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Waterfall Model
The document discusses the waterfall model, which divides software development into sequential phases where each phase must be completed before the next begins. The waterfall model is simple to understand and manage due to its rigid structure, but it is not well-suited for complex projects where requirements may change, as any changes could end the project. While requirements and the technology are stable and well-defined, the waterfall model presents high risks and uncertainty.
Waterfall Model PPT in Software Engineering
What is Waterfall Model? History of waterfall model, Advantages, Disadvantages and much more realted to waterfall model.
The waterfall model is the basic and simple software development life cycle model. But idealistic. Earlier the waterfall model was very popular but these days it is not used while software development. And the model was divided into phases and all the phases are organized in linear order. This model was first introduced by Dr. Winston in 1970.
This model is very popular and very important because all the models in software development life cycle models are based on it. So, we can call it, It is the base of all software development life cycle models or it is known as Classical Waterfall Model.
waterfall model
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.
Prototyping model advantages and disadvantages
The prototype model involves building a throwaway prototype early in the development process to help understand requirements rather than freezing them upfront. This allows clients to get hands-on experience with the system and provide better feedback. Prototypes are incomplete but provide overall functionality. The prototype model is best for complex systems where requirements are unclear and user interaction and feedback is important, such as web and online systems. It enables errors and missing requirements to be identified early. However, it risks requirements changing too much and the system becoming more complex than originally intended.
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.
Vmodel
The document discusses the V-model, a sequential software development process where each phase must be completed before the next begins and testing occurs in parallel to development phases. It notes the V-model is simple, allows early defect detection, and works well for small projects with fixed requirements, but is rigid with no early prototypes and changes can require updating many documents. In conclusion, the V-model is best for small-medium projects when requirements are clear and resources are available, but high customer confidence is needed as there is risk with no prototypes.
Introduction to Software Engineering
The document discusses several software development models, including Waterfall, V-Model, Incremental, Spiral, Prototype, RAD, and Agile. It provides details on the phases and characteristics of the Waterfall and V-Model approaches. The Waterfall Model is described as the original linear process, while the V-Model emphasizes testing in parallel with development. The document also notes that Agile methodology is now most commonly used due to allowing for continuous customer feedback.
Waterfall Model By Zubair YaSeeN
The document presents information on the waterfall model of software development. It discusses the history and definition of the waterfall model. The key phases of the waterfall model are requirements gathering and analysis, design, coding, testing, and maintenance. Each phase is completed sequentially before moving to the next. The waterfall model provides a structured approach but lacks flexibility if requirements change.
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Waterfall Model
The document discusses the waterfall model, which divides software development into sequential phases where each phase must be completed before the next begins. The waterfall model is simple to understand and manage due to its rigid structure, but it is not well-suited for complex projects where requirements may change, as any changes could end the project. While requirements and the technology are stable and well-defined, the waterfall model presents high risks and uncertainty.
Waterfall Model PPT in Software Engineering
What is Waterfall Model? History of waterfall model, Advantages, Disadvantages and much more realted to waterfall model.
The waterfall model is the basic and simple software development life cycle model. But idealistic. Earlier the waterfall model was very popular but these days it is not used while software development. And the model was divided into phases and all the phases are organized in linear order. This model was first introduced by Dr. Winston in 1970.
This model is very popular and very important because all the models in software development life cycle models are based on it. So, we can call it, It is the base of all software development life cycle models or it is known as Classical Waterfall Model.
waterfall model
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.
Prototyping model advantages and disadvantages
The prototype model involves building a throwaway prototype early in the development process to help understand requirements rather than freezing them upfront. This allows clients to get hands-on experience with the system and provide better feedback. Prototypes are incomplete but provide overall functionality. The prototype model is best for complex systems where requirements are unclear and user interaction and feedback is important, such as web and online systems. It enables errors and missing requirements to be identified early. However, it risks requirements changing too much and the system becoming more complex than originally intended.
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.
Vmodel
The document discusses the V-model, a sequential software development process where each phase must be completed before the next begins and testing occurs in parallel to development phases. It notes the V-model is simple, allows early defect detection, and works well for small projects with fixed requirements, but is rigid with no early prototypes and changes can require updating many documents. In conclusion, the V-model is best for small-medium projects when requirements are clear and resources are available, but high customer confidence is needed as there is risk with no prototypes.
Introduction to Software Engineering
The document discusses several software development models, including Waterfall, V-Model, Incremental, Spiral, Prototype, RAD, and Agile. It provides details on the phases and characteristics of the Waterfall and V-Model approaches. The Waterfall Model is described as the original linear process, while the V-Model emphasizes testing in parallel with development. The document also notes that Agile methodology is now most commonly used due to allowing for continuous customer feedback.
Waterfall Model By Zubair YaSeeN
The document presents information on the waterfall model of software development. It discusses the history and definition of the waterfall model. The key phases of the waterfall model are requirements gathering and analysis, design, coding, testing, and maintenance. Each phase is completed sequentially before moving to the next. The waterfall model provides a structured approach but lacks flexibility if requirements change.
Spiral model explanation
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.
Comparison between waterfall model and spiral model
The document compares the waterfall and spiral models of software development. It describes the phases and characteristics of each model. The waterfall model progresses through phases sequentially with no going back, while the spiral model iterates through phases and allows revisiting previous work. The key difference is that the spiral model supports changes more easily and involves customers throughout, while the waterfall model does not support changes as well and involves customers less. Choosing a model depends on factors like project size, resources, and urgency.
Spiral model
The document presents information on the Spiral Model software development process. It discusses that the Spiral Model combines elements of the prototype model and waterfall model. It involves dividing the process into task regions like customer communication, planning, risk analysis, engineering, and construction. Each task region results in further refinement through iterations of the spiral. The Spiral Model allows for risk analysis and adding new features throughout the process.
Waterfall and spiral model
The Waterfall model is a sequential software development process that was first introduced by Winston Royce in 1970. It involves analyzing requirements, designing, implementing, testing, integrating, and maintaining software in distinct phases where each phase depends on the deliverables of the previous one. While it provides structure, works well for quality-focused projects, and requires all requirements upfront, it is rigid and doesn't allow for changes late in the process.
Comparison of the Waterfall, Spiral, and Prototype SDLC Models
A paper for one of my master's classes, comparing and contrasting the waterfall, spiral, and prototype SDLC models.
Spiral Model & Requirement Validation
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
The Spiral Model is a software development lifecycle model that combines elements of prototyping and the waterfall model. It involves iterating through phases for communication, planning, modeling, construction and deployment in spirals to obtain early feedback from customers. Each iteration allows for refinement of deliverables based on customer evaluations and helps manage risks for large, expensive and complex projects.
Prototype model of SDLC
perfect for college presentation to speak about the prototype model for 5 minutes or can be extended according to the explanation given by the student or presenter about the diagram that shows the phases,
What is iterative model
The iterative model is a software development approach where requirements are defined and implemented in increments, with each increment building on the previous ones. In each iteration, a small part of the software is specified, developed, tested, and reviewed to identify additional requirements. This process is repeated until the full product is complete. The iterative model allows requirements to evolve over time through user feedback on early versions. It has advantages like early defect detection and user input, but risks costly late-stage changes from unclear initial requirements. The iterative approach is best for large projects where major requirements are defined but details can change.
Software development life cycle
The document discusses various software development life cycle models, including:
- The waterfall model, which progresses through sequential stages from requirements to maintenance. It allows for predictability but not flexibility.
- Iterative models like prototyping and incremental development, which allow delivering functionality in phases to get early user feedback.
- The V-model which emphasizes verification and validation activities at each stage.
- Agile methods like Scrum and eXtreme Programming which are iterative, incremental and emphasize adaptability over heavy documentation.
PROTOTYPE MODEL
A prototype model is system development life cycle (SDLC) model used by companies in information system department.
Software Prototyping
Prototyping involves rapidly developing an initial version of a system to validate requirements and gain user feedback. There are two main approaches - evolutionary prototyping iteratively develops prototypes into the final system, while throw-away prototyping discards the prototype after validating requirements. Rapid prototyping techniques include using high-level languages, database programming, and component reuse to quickly develop initial versions. User interface prototyping is also important to get early user input on look and feel.
Prototype model
The prototype model of the software development life cycle is an evolutionary approach where prototypes are built and tested to refine requirements and the final product. In this model, an initial prototype is developed based on the original design and user feedback, which allows users to better understand the system and provide feedback to enhance the prototype in subsequent iterations. Key benefits of this model include detecting errors earlier, gaining quicker user feedback to develop better solutions, and actively involving users in the development process. However, it can also be a slower process and require significant client involvement.
Prototype model and process
The document discusses prototype modeling. It defines a prototype as a working model built to test design aspects or concepts. There are different types of prototyping models and processes. Benefits of prototyping include exposing misunderstandings, identifying missing functionality, and encouraging innovation. Potential disadvantages are insufficient analysis if the focus is only on the prototype, user confusion between prototypes and finished systems, and excessive development time.
50500113 spiral-model
This document discusses various iterative software development models, including the spiral model, win-win spiral model, and cleanroom methodology. The spiral model is risk-driven and involves iterating through phases of planning, risk assessment, engineering, and evaluation. The win-win spiral model seeks to reconcile stakeholder objectives through negotiation. Cleanroom methodology emphasizes technical reviews, incremental development, and testing to reduce defects. Alternative models like hacking are also discussed for low-risk or disposable projects. Overall, the iterative models attempt to address limitations of the traditional waterfall model by incorporating feedback loops, prototyping, and incremental delivery.
Prototype model 130714101556-phpapp02
The document discusses the prototype model for software development. It begins with building a prototype to get early feedback from customers. This allows refining requirements before full development. The process then involves designing, implementing, and testing the prototype before getting customer evaluation and further refining requirements. The full development includes designing, implementing, integrating, testing and maintaining the final software based on the prototype model.
How to develop a project or application
The software is an indispensable thing in the modern age. This presentation I tried to exposed application development lifecycle. From starting to end development.
Edu+Presentation
This document discusses various software life-cycle models including waterfall, rapid prototyping, incremental, extreme programming, synchronize-and-stabilize, spiral, and object-oriented models. It provides an overview of each model's key characteristics and phases. The document advocates for a "mix-and-match" approach, noting that different models have strengths for varying organizations, teams, products, and situations. No single model is best for all cases.
software engineering (spiral process model)
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.
Prototyping model
The document discusses the prototyping lifecycle model in software engineering. It describes prototyping as creating early versions of a software application to gather requirements and refine the design. The key steps are: gathering requirements through user interviews, creating a preliminary design, building a prototype, assessing the prototype with users, refining it based on their feedback, and developing the final product. There are different types of prototyping like throwaway, evolutionary, incremental, and extreme. Prototyping helps produce systems that better meet user needs and finds problems earlier in the development cycle.
Waterfall model ppt final
The document describes the waterfall model of software development. It begins by listing the presenters and defining sequential and incremental software development models. It then discusses the waterfall model in more detail, describing it as a linear sequential process where each phase must be completed before the next begins. The document outlines the history, use cases, diagram, phases and advantages/disadvantages of the waterfall model.
Waterfall model
The waterfall model is a sequential design process, used in software development processes, in which progress is seen as flowing steadily downwards (like a waterfall) through the phases of conception, initiation, analysis, design, construction, testing, production/implementation and maintenance.
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Spiral model explanation
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.
Comparison between waterfall model and spiral model
The document compares the waterfall and spiral models of software development. It describes the phases and characteristics of each model. The waterfall model progresses through phases sequentially with no going back, while the spiral model iterates through phases and allows revisiting previous work. The key difference is that the spiral model supports changes more easily and involves customers throughout, while the waterfall model does not support changes as well and involves customers less. Choosing a model depends on factors like project size, resources, and urgency.
Spiral model
The document presents information on the Spiral Model software development process. It discusses that the Spiral Model combines elements of the prototype model and waterfall model. It involves dividing the process into task regions like customer communication, planning, risk analysis, engineering, and construction. Each task region results in further refinement through iterations of the spiral. The Spiral Model allows for risk analysis and adding new features throughout the process.
Waterfall and spiral model
The Waterfall model is a sequential software development process that was first introduced by Winston Royce in 1970. It involves analyzing requirements, designing, implementing, testing, integrating, and maintaining software in distinct phases where each phase depends on the deliverables of the previous one. While it provides structure, works well for quality-focused projects, and requires all requirements upfront, it is rigid and doesn't allow for changes late in the process.
Comparison of the Waterfall, Spiral, and Prototype SDLC Models
A paper for one of my master's classes, comparing and contrasting the waterfall, spiral, and prototype SDLC models.
Spiral Model & Requirement Validation
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
The Spiral Model is a software development lifecycle model that combines elements of prototyping and the waterfall model. It involves iterating through phases for communication, planning, modeling, construction and deployment in spirals to obtain early feedback from customers. Each iteration allows for refinement of deliverables based on customer evaluations and helps manage risks for large, expensive and complex projects.
Prototype model of SDLC
perfect for college presentation to speak about the prototype model for 5 minutes or can be extended according to the explanation given by the student or presenter about the diagram that shows the phases,
What is iterative model
The iterative model is a software development approach where requirements are defined and implemented in increments, with each increment building on the previous ones. In each iteration, a small part of the software is specified, developed, tested, and reviewed to identify additional requirements. This process is repeated until the full product is complete. The iterative model allows requirements to evolve over time through user feedback on early versions. It has advantages like early defect detection and user input, but risks costly late-stage changes from unclear initial requirements. The iterative approach is best for large projects where major requirements are defined but details can change.
Software development life cycle
The document discusses various software development life cycle models, including:
- The waterfall model, which progresses through sequential stages from requirements to maintenance. It allows for predictability but not flexibility.
- Iterative models like prototyping and incremental development, which allow delivering functionality in phases to get early user feedback.
- The V-model which emphasizes verification and validation activities at each stage.
- Agile methods like Scrum and eXtreme Programming which are iterative, incremental and emphasize adaptability over heavy documentation.
PROTOTYPE MODEL
A prototype model is system development life cycle (SDLC) model used by companies in information system department.
Software Prototyping
Prototyping involves rapidly developing an initial version of a system to validate requirements and gain user feedback. There are two main approaches - evolutionary prototyping iteratively develops prototypes into the final system, while throw-away prototyping discards the prototype after validating requirements. Rapid prototyping techniques include using high-level languages, database programming, and component reuse to quickly develop initial versions. User interface prototyping is also important to get early user input on look and feel.
Prototype model
The prototype model of the software development life cycle is an evolutionary approach where prototypes are built and tested to refine requirements and the final product. In this model, an initial prototype is developed based on the original design and user feedback, which allows users to better understand the system and provide feedback to enhance the prototype in subsequent iterations. Key benefits of this model include detecting errors earlier, gaining quicker user feedback to develop better solutions, and actively involving users in the development process. However, it can also be a slower process and require significant client involvement.
Prototype model and process
The document discusses prototype modeling. It defines a prototype as a working model built to test design aspects or concepts. There are different types of prototyping models and processes. Benefits of prototyping include exposing misunderstandings, identifying missing functionality, and encouraging innovation. Potential disadvantages are insufficient analysis if the focus is only on the prototype, user confusion between prototypes and finished systems, and excessive development time.
50500113 spiral-model
This document discusses various iterative software development models, including the spiral model, win-win spiral model, and cleanroom methodology. The spiral model is risk-driven and involves iterating through phases of planning, risk assessment, engineering, and evaluation. The win-win spiral model seeks to reconcile stakeholder objectives through negotiation. Cleanroom methodology emphasizes technical reviews, incremental development, and testing to reduce defects. Alternative models like hacking are also discussed for low-risk or disposable projects. Overall, the iterative models attempt to address limitations of the traditional waterfall model by incorporating feedback loops, prototyping, and incremental delivery.
Prototype model 130714101556-phpapp02
The document discusses the prototype model for software development. It begins with building a prototype to get early feedback from customers. This allows refining requirements before full development. The process then involves designing, implementing, and testing the prototype before getting customer evaluation and further refining requirements. The full development includes designing, implementing, integrating, testing and maintaining the final software based on the prototype model.
How to develop a project or application
The software is an indispensable thing in the modern age. This presentation I tried to exposed application development lifecycle. From starting to end development.
Edu+Presentation
This document discusses various software life-cycle models including waterfall, rapid prototyping, incremental, extreme programming, synchronize-and-stabilize, spiral, and object-oriented models. It provides an overview of each model's key characteristics and phases. The document advocates for a "mix-and-match" approach, noting that different models have strengths for varying organizations, teams, products, and situations. No single model is best for all cases.
software engineering (spiral process model)
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.
Prototyping model
The document discusses the prototyping lifecycle model in software engineering. It describes prototyping as creating early versions of a software application to gather requirements and refine the design. The key steps are: gathering requirements through user interviews, creating a preliminary design, building a prototype, assessing the prototype with users, refining it based on their feedback, and developing the final product. There are different types of prototyping like throwaway, evolutionary, incremental, and extreme. Prototyping helps produce systems that better meet user needs and finds problems earlier in the development cycle.
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Comparison between waterfall model and spiral model
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Similar to Waterfallmodelppt final-140209060959-phpapp01
Waterfall model ppt final
The document describes the waterfall model of software development. It begins by listing the presenters and defining sequential and incremental software development models. It then discusses the waterfall model in more detail, describing it as a linear sequential process where each phase must be completed before the next begins. The document outlines the history, use cases, diagram, phases and advantages/disadvantages of the waterfall model.
Waterfall model
The waterfall model is a sequential design process, used in software development processes, in which progress is seen as flowing steadily downwards (like a waterfall) through the phases of conception, initiation, analysis, design, construction, testing, production/implementation and maintenance.
SDLC Model (Waterfall,Iterative Waterfall,Spiral)
Iterative model.
Spiral model
RAD(Rapid application development)
model.
Iterative model.
Spiral model
RAD(Rapid application development)
model.
A Water Fall Model is easy to flow.
It can be implemented for any size of project.
Every stage has to be done separately at the right time so you cannot jump stages.
Documentation is produced at every stage of a waterfall model allowing people to understand what has been done.
Testing is done at every stage.
This model was not the first model to discuss iterative development.
As originally envisioned, the iterations were typically 6 months to 2 years long.
Each phase starts with a design goal and ends with the client (who may be internal) reviewing the progress thus far.
Analysis and engineering efforts are applied at each phase of the project, with an eye toward the end goal of the project.
This model was not the first model to discuss iterative development.
As originally envisioned, the iterations were typically 6 months to 2 years long.
Each phase starts with a design goal and ends with the client (who may be internal) reviewing the progress thus far.
Analysis and engineering efforts are applied at each phase of the project, with an eye toward the end goal of the project.
This model was not the first model to discuss iterative development.
As originally envisioned, the iterations were typically 6 months to 2 years long.
Each phase starts with a design goal and ends with the client (who may be internal) reviewing the progress thus far.
Analysis and engineering efforts are applied at each phase of the project, with an eye toward the end goal of the project.
This approach carries less risk than a traditional Waterfall approach but is still far more risky and less efficient than a more Agile approaches.
In Iterative model, iterative process starts with a simple implementation of a small set of the software requirements and iteratively enhances the evolving versions until the complete system is implemented and ready to be deployed.
Iterative model.
Spiral model
RAD(Rapid application development)
model.
The first formal description of the waterfall model is often cited as a 1970 article by Winston W. Royce
Royce did not use the term "waterfall" in this article.
Royce presented this model as an example of a flawed, non-working model.
What is waterfall
The Waterfall Model is a linear sequential software development process where each phase must be completed before the next can begin. It has six phases: requirements, analysis, design, coding, testing, and maintenance. The advantages are that it is simple, easy to manage each phase, and works well for small projects with fixed requirements. The disadvantages are that it is inflexible, does not allow for overlapping phases, and changes later in the process are costly. The Waterfall Model is best for projects with stable requirements, clear specifications, and available expertise throughout the process.
diff type of models.pptx
The document discusses three software development models: the waterfall model, prototype model, and spiral model. The waterfall model is a linear sequential model where each phase must be completed before the next begins. The prototype model involves building initial prototypes to get user feedback before finalizing requirements. The spiral model is iterative with risk analysis, planning, development and evaluation cycles.
SDLC- concept and models
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.
Sdlc
The document discusses the waterfall model, which is an early software development life cycle approach where each phase must be completed before the next begins, with no overlapping phases. The phases include requirements, design, implementation, testing, and maintenance. The waterfall model works best for smaller, clearly-defined projects with stable requirements and is simple to understand and use. However, it does not allow for changing requirements and produces no working software until late in the cycle.
Waterfall model
The document discusses the waterfall model, which is a sequential software development process where progress flows steadily from one phase to the next - conception, initiation, analysis, design, construction, testing, production/implementation, and maintenance. The key phases and deliverables are completed one at a time before moving to the next phase. The waterfall model is simple and easy to understand, manage, and works well for smaller projects with well-defined requirements. However, it is inflexible and carries high risks since changes are difficult once a later phase has begun and no working software is produced until late in the lifecycle. The model is not suitable for complex, long-term, or ambiguous projects where requirements may change.
Waterfall Model (Software Engineering)
The Waterfall model is a sequential software development process introduced by Winston Royce in 1970. It consists of 5 phases: requirements analysis, design, implementation, testing, and maintenance. Each phase must be completed before the next begins and there is no overlapping or iteration between phases. The model is linear and waterfall-like, representing a strict sequence from abstract definition to concrete code.
What is waterfall model
The Waterfall Model is a linear sequential software development process where each phase must be completed before the next phase begins. It is simple to understand and manage but inflexible. The Waterfall Model works best for small projects with well-defined and stable requirements where technology is understood and resources are available. It is not suitable for complex, long term, or uncertain projects where requirements may change.
Process Models in Software Engineering
The document discusses and compares different models of project development: Waterfall model, Incremental model, and Spiral model. The Waterfall model involves completing each phase fully before starting the next in a linear sequence, while the Incremental model divides the project into modules developed iteratively and the Spiral model similarly iterates in risk analysis, engineering, and evaluation spirals.
Waterfall, Incremental and prototyping model
The document discusses different software development models: Waterfall, Incremental, and Prototyping. The Waterfall model involves sequential phases from requirements to maintenance with no overlap. It is simple but difficult to change requirements later. The Incremental model develops software in modules with each phase building on previous work. This allows for flexibility but architecture risks. The Prototyping model uses prototypes to refine requirements through iterative testing and reworking. Customers see progress but the timeline is uncertain.
Waterfall model in SDLC
The Waterfall model is a popular sequential model of the software development life cycle where each phase must be completed before the next begins. It consists of requirements, design, implementation, verification, and maintenance phases. Though simple to understand and manage, the Waterfall model works best for smaller, well-defined projects as it is inflexible to changes and produces no working software until late in the cycle.
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This document discusses various software development life cycle (SDLC) models including waterfall, iterative waterfall, rapid prototype, evolutionary, spiral, fish, V-shape, RAD, and incremental models. For each model, it provides a brief description and highlights the advantages and disadvantages. The models differ in their structure, approach to requirements, testing, flexibility, and ability to handle risk and changing requirements.
Evolutionary models
Evolutionary models are iterative and incremental software development approaches that combine iterative and incremental processes. There are two main types: prototyping and spiral models. The prototyping model develops prototypes that are tested and refined based on customer feedback until requirements are met, while the spiral model proceeds through multiple loops or phases of planning, risk analysis, engineering, and evaluation. Both approaches allow requirements to evolve through development and support risk handling.
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Software Development Life Cycle (SDLC)
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Models of SDLC (Software Development Life Cycle / Program Development Life Cy...
Models of SDLC (Software Development Life Cycle / Program Development Life Cy...Amity University | FMS - DU | IMT | Stratford University | KKMI International Institute | AIMA | DTU
Software Lifecycle Models / Software Development Models
Types of Software development models
Waterfall Model
Features of Waterfall Model
Phase of Waterfall Model
Prototype Model
Advantages of Prototype Model
Disadvantages of Prototype model
V Model
Advantages of V-model
Disadvantages of V-model
When to use the V-model
Incremental Model
ITERATIVE AND INCREMENTAL DEVELOPMENT
INCREMENTAL MODEL LIFE CYCLE
When to use the Incremental model
Rapid Application Development RAD Model
phases in the rapid application development (RAD) model
Advantages of the RAD model
Disadvantages of RAD model
When to use RAD model
Agile Model
Advantages of Agile model
Disadvantages of Agile model
When to use Agile model
Final boss
Hospital Management System :-
E R Digram
Use case Diagram
Data Dictionary
DFD Diagram
And SRS of Hospital Management System
and etc.....
waterfall model.pptx
The document presents a student presentation on the waterfall model of software development. It describes the waterfall model as having sequential phases from requirements analysis through deployment, with the output of each phase forming the input for the next. The phases are described as requirements analysis, system design, implementation, integration and testing, and deployment. Advantages of the waterfall model include its simplicity and structure, while disadvantages include inability to accommodate changing requirements or measure progress within phases.
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Waterfallmodelppt final-140209060959-phpapp01
- 1. WATERFLLMODEL Presented by.. Shiva Krishna Santhosh Chandra Varsha nihanth Aparna Archana Anusha
- 3. Sequential model Waterfall model. V-model. Incremental model. Spiral model RAD(Rapid application development) model. Incremental model
- 4. Waterfall Model It is also called as linear sequential model. In this model whole application is developed in a sequential approach. In this model each phase must be completed fully before the next phase begin. Provides structure to inexperienced staff.
- 5. History of waterfall model The first formal description of the waterfall model is often cited as a 1970 article by Winston W.Royce. Royce presented this model as as an example of a flawed,non-working model. It has been widely used for software projects ever since.
- 6. Where to use the waterfall model Requirements are very well known. Product definition is stable. Technology is understood. New version of an existing product.
- 8. Requirement Gathering Requirement Analysis Design Coding Testing Release & Maintenance In this phase business analyst will collect the requirements with an interaction of client and collected requirements will be documented. In this phase system analyst will study the client requirements and prepare the system requirement specification. In this phase design architecture is the responsible to decide architecture of an application in order to full- fill the client requirements . In this phase developers will write the program using programming languages or scripting languages in order to develop the application. Initially developers will perform unit testing and integration testing using of white box testing, After that separate team will be perform system testing using black box testing After the testing client satisfied on work product then we deliver application to the customer to use at live environment. While using this application client identify can some defects in existing s/m then he will send to the CR to CCB .
- 9. ADVANTAGES A waterfall model is easy to implementation. It helps to find errors earlier Easy to understand, easy to use. Works well when quality is more important than cost or schedule Documentation is produced at every stage of a waterfall model allowing people to understand what has been done. Testing is done at every stage.
- 10. disadvantages It is only suitable for the small size projects. Constant testing of the design is needed. If requirements may change the Waterfall model may not work. Difficult to estimate time and cost for each stage of the development process. Adjust scope during the life cycle can kill a project. High amount of risk and uncertainty. This model is not suitable to handle dynamic changes in the requirements
- 11. ANY QUERIES