The Software Development Process (SDLC)

The Software Development Process (SDLC)

1. Cycle

   • Implementation
     • Applicationj Code Devolpment, System Interface Development, Unit Resting, Integration with existing Apps.
   • Requirements analysis
     • Planning
     • Planing, functionality requirements, Initial User Interface, Technology Platform Selection, Technical Architecture
   • Design
     • Application Architecure, Detailed Specifications, System Interface Design, Funaluze User Interface, Test Plans.
   • Testing
     • Regression Testing, Integration testing, system testing, Acceptance Testing.
   • Deployment/Maintenance
     • Deployment, Installation, Support

2. Systems Development Life Cycle (SDLC) Lief-Cycle Phases

   • Initiation
     • Begins wwhen a sponsor identifies a need o an opportunity.
   • System Concept devolpment
     • Defines the scope of boundary of the concepts
   • Planing
     • Develops a project management plan and other planing documents
   • requirements analysys
     • Analyses user needs and develops user requirements
   • Design
     • Transforms detalided requirement into complete, detaliled Sustems design document focuses on how to deliver the required functionality
   • Deviolpment
     • Converts a design into a complete infomation system environment
   • Integration and Test
     • Demonstrates that deveolped system confrorms to requirements as speciied in the Functional requeriments Document.
   • Implementetation
     • Includes implementation preparation, implementation of the system into a production environment, and resolution of problems identified in the integration and test phases
   • Opetarions and Maintenance
     • Describes tasks to operate and maintain information systems in a production environment icludes post-implementation and un-process reviews
   • Disposition
     • Describes end-of-system activities, emphasis is given to proper preparation of data

3. Software Release

   • Alpha Release
     • Internal release, no public
   • Beta Releases
     • "Deveolper Preview","Consumer Preview"
   • RC ( Release Canditate)
     • "Release Preview"
   • RTM(Release To Manufacturing)
     • Release to manufactoring maintenance ( after the software is released)
   • Patches
     • Small Fixes
   • SP
     • Service packs(lots of small fixes and pathes together)

4. Software Team

   • System Engineer
     • Software Architect
     • Designer
     • Software Tester
     • Programmer
   • Stakeholders
   • Project Manager

5. Software Development Methods/ Processes

   • Traditional plan-driven methods
     • Waterfall method
       • A sequential Process, you cannot go to next phase before finished the previous phase
     • V-Model
       • An extension of the waterfall model more flexible
     • Spiral model
       • Some key aspectaq from waterfalll, Iterative risk analysis, Suitable for large-scale complex systems
   • agile methods
     • Lean Software Development
     • SCRUM
       • - A framework for software Developmento, flexible, - Exremely difficult to master!, -SElf-organizing Teams(3-9)
     • eXtreme Programmin (XP)
       • Pair Programming, Code Reviews, Unit Testing, Standup Meetings
     • Test Driven Development(TDD)
       • It always start with a test
     • Feature Driven Development(FDD)