Knowledge management
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ABC Technologies is an IT company founded in 1996 that employs over 7,000 people. It uses an incremental model of software development where requirements are broken into smaller modules that are developed and tested in cycles. This allows for flexibility and client feedback at each step but has higher total costs than the waterfall model. The spiral model combines iterative development with aspects of the waterfall model, forming a more systematic approach where conceptual designs, risk analysis and client feedback occur in cycles. It is well-suited for large complex projects. Agile development involves self-organizing cross-functional teams collaborating to evolve requirements and solutions.
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This document discusses different software process models including waterfall, prototyping, incremental development, spiral, RAD, and V-models. It explains the key stages and benefits and limitations of each model. The document emphasizes that each model tries to provide a framework for software development but that borrowing from multiple models may be necessary. Real-life examples like Windows development are given to illustrate using the spiral model.
Software Development Lifecycle: What works for you?
Software Development Forum 2012
"There is no time for debugging"
4-5 October 2012
Putra World Trade Centre, Kuala Lumpur, Malaysia
Sdlc
The document discusses several software development life cycle (SDLC) models:
- Waterfall model involves sequential phases of requirements, design, implementation, testing and deployment with defined deliverables for each phase. It works well for stable requirements but lacks flexibility.
- V-shaped model emphasizes verification and validation testing in parallel with development phases. It focuses on planning testing in early phases.
- Prototyping model involves building prototypes to clarify requirements with user feedback before final development.
- RAD model focuses on rapid delivery through time-boxed iterations with customer involvement.
- Incremental model prioritizes and implements requirements in groups to provide early functionality.
- Spiral model combines prototyping, risk analysis
Software Process Models
The document discusses various software process models including prescriptive models like waterfall model and incremental process model. It also covers evolutionary models like prototyping and spiral process model. Specialized models covered are component based development, formal methods model, aspect oriented development and unified process model. The key highlights are that different models are suited for different situations based on project needs and each model has advantages and disadvantages to consider.
Software engineering lecture notes
The document discusses different software engineering process models including:
1. The waterfall model which is a linear sequential model where each phase must be completed before moving to the next.
2. Prototyping models which allow requirements to be refined through building prototypes.
3. RAD (Rapid Application Development) which emphasizes short development cycles through reuse and code generation.
4. Incremental models which deliver functionality in increments with early increments focusing on high priority requirements.
5. The spiral model which has multiple iterations of planning, risk analysis, engineering and evaluation phases.
System Development
The document discusses several system development life cycle (SDLC) models including waterfall, iterative, incremental, spiral, RAD, concurrent, and unified process models. The key phases of SDLC are defined as preliminary survey, analysis, design, implementation, post-implementation/maintenance, and project termination. Each model takes different approaches such as sequential, iterative, incremental, or concurrent development through the SDLC phases.
SDLC MODEL
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.
Software Development Life Cycle Part II
The document discusses several software development life cycle (SDLC) models including waterfall, V-shaped, prototyping, rapid application development (RAD), incremental, spiral, and timeboxing. It provides descriptions of each model including typical steps, strengths, weaknesses, and when each model is best suited. It also discusses capability maturity model (CMM) levels and how changing the lifecycle model can impact development speed, quality, visibility, overhead, risk, and customer relations.
Software Product Engineering Services | Digital Transformation
Skizzle is a global software product engineering company and a community of passionate, purpose-led individuals. We think disruptively to deliver technology to address our clients’ toughest challenge, all while seeking to revolutionize the IT industry and create positive social change.
Sdlc models
The document discusses several software development lifecycle models including waterfall, iterative, V-model, and spiral models. The waterfall model is presented as the original sequential model consisting of requirements, design, implementation, testing, and maintenance phases. Common problems with requirements analysis are then outlined. Finally, iterative, V-model, and spiral models are introduced as alternatives that allow for more flexibility and iteration.
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Lect-4: Software Development Life Cycle Model - SPM
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Software Development Lifecycle: What works for you?
Software Development Lifecycle: What works for you?
Software Product Engineering Services | Digital Transformation
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- 1. Knowledge management ABC* TECHNOLOGIES By- Roocha Kharche * Name changed due to confidentiality
- 2. About the company Founded in 1996 Headquarters- Illinois, USA Employees- 7000+ It specializes in IT Solutions and Services, Applications Management Services, Infrastructure Services, Lifecycle Management, Mobility Services, Quality Assurance and Testing Services
- 3. Incremental model In this model the requirement is divided into various builds Cycles are divided up into smaller, more easily managed modules
- 4. Phases in the module
- 6. Advantages and disadvantages 1. More flexible, easier to test in smaller builds 2. In this model customer can respond to each build thus working closely at each step 3.Lowers initial delivery cost 1.Needs good initial design and planning 2.Clear understanding of system requirements is a must for using this model 3.Total cost is higher than waterfall model
- 7. SPIRAL MODEL It combines iterative development with the aspects of the waterfall model thus forming a more systematic and controlled model Identification Basic requirements are gathered and system requirements are broken down to unit requirements Various builds are created and initial coding is done, clients feedback is required after the POC development. In the next spiral actual coding start and builds are given a version no. and then sent for client’s feedback Conceptual designs are made, design docs are created and modules are designed and discussed with clients It includes -Monitoring technical feasibility -Risk identification and management(schedule slippage and cost overrun) Evaluation and Risk Analysis Design Construct or Build
- 8. Spiral model
- 9. Spiral Vs Incremental • Very flexible model and the development manager can decide the phases according to the complexity of the work and resources skill • Estimates (i.e. budget, schedule, etc.) get realistic early in the life cycle which means that if there are any mistakes they can be handled sooner • It is more suited to larger projects which ABC* technologies handle • Software is produced early in the software life cycle thus there is enough time for testing
- 10. Agile Software Development Set of software development methods in which requirements and solutions evolve through collaboration between self-organizing, cross-functional teams Developers Line Managers (Tech Leads, AVPs and VPs) Project Manager Testers Test Lead Scrum Masters Business Analysts Product Owner