SDLC Class 4

SDLC Systems Development Life Cycle Traditional methodology used to develop, maintain, and replace information systems. Orderly set of activities conducted and planned for each development project.

Steps in SDLC Planning/Selection Analysis Design Implementation/Support

SDLC Project Identification & Selection Project Initiation & Planning Analysis Logical Design Physical Design Implementation Maintenance

Assumptions of SDLC Can define project boundary You know what you want the system to do and can specify it in detail Defined stages allow for project control Problems are easier and cheaper to fix earlier in the process

Complaints about SDLC 1.

Question: With disadvantages of SDLC, why was it used?

Variations of the SDLC Emphasis on Iteration Prototyping Emphasis on people Participatory Design JAD Emphasis on speed RAD (Agile methodologies) JAD, Risk Management, Reuse, Tool Development Emphasis on objects UML UP, RUP

Options for Acquisition Outsourcing Turning over responsibility to 3 rd party Can include Custom Software providers Packaged Software Growing in popularity “Best Practices” built in Can include ERPs and ASPs In-House development