System design technique  System Development Life Cycle  Prototyping  Rapid Application Development

System Development Life Cycle (SDLC)  Popular technique  Take long time to complete the projects  contain six different inter-related steps

Six different inter-related steps Project identification and Selection Project initiation and Planning System Analysis System Design System Implementation Maintenance

Project identification and Selection This step consists of the following three activities  Identifying potential development projects  Classifying and ranking projects  Selecting projects for development

Identifying potential development projects This process performed by,  Key members of top management  Steering committee  User departments  Development group

Classifying and ranking projects Possible evaluation criteria when classifying and ranking projects  Value chain analysis  Strategic alignment  Potential benefit  Resource availability  Project size/duration  Technical difficulty/Risk

Selecting projects for development Factors consider when selecting the project,  Existing and available recourses  Current organizational environment  List of Potential and ongoing projects  Evaluation criteria

Project initiation and Planning  Initiation  Planning

Project Initiation Elements of Project Initiation  Establishing the project initiation team  Establishing a relation ship with a customer  Establishing the project initiation plan  Establishing management procedure  Establishing the project management environment and project work book

Project Planning Elements of project planning,  Describing the feasibility  Dividing the project into manageable task  Developing the preliminary schedule  Developing a communication plan  Creating preliminary budget

System Analysis Requirement determination Requirement structuring Alternative generation and selection

Requirement determination Collecting system requirement,  Interview  Questionnaire  Observation  Manuals  Existing System

Requirement structuring  Data flow diagrams  Structured English  Decision table  Decision tree  State transition diagram or tables

System Design  Files and database  Forms and reports  Dialog and interfaces  System and Program structure  Distributed system  Security  Input/output

System Implementation  Codingwith a programming language  Testingwith a sample data  InstallationDirect, parallel or pilot  Documentation  Training  Support

System Maintenance  Obtaining maintenance request  Transforming request into changes  Designing changes  Implementing changes