Chapter 11

Information Systems Development

What is the System Development Life Cycle?

• Phases of the SDLC
• Planning
• Analysis
• Design
• Implementation
• Support
• Guidelines for System Development
• Phased Approach
• Involve Users
• Develop Standards
• Who Participates in SDLC?
• Systems Analyst
• Programmer
• Steering Committee
• Project Team
• Project Management
• Feasibility Assessment
• Documentation
• Data & Information Gathering

Planning Phase

• Review Project Requests
• Prioritize Project Requests
• Allocate Resources
• Identify Project Development Team

Analysis Phase

• Preliminary Investigation
• Detailed Analysis
• Structured Analysis & Design Tools
• Entity-Relationship Diagrams
• Data Flow Diagrams
• Project Dictionary
• Structured English
• Decision Tables/Trees
• Data Dictionary
• Build-or-Buy Decision
• Packaged Software
• Custom Software

Design Phase

• Acquire Hardware & Software
• Identify Technical Specifications
• Solicit Vendor Proposals
• Selecting Vendor Proposals
• Testing & Evaluating Vendor Proposals
• Making a Decision
• Detailed Design
• Database Design
• Input and Output Design
• Program Design
• Prototyping
• CASE Tools
• Quality Review Techniques

Implementation Phase

• Develop Programs
• Install & Test New System
• Systems Test
• Integration Test
• Acceptance Test
• Train & Educate Users
• Convert to New System

Support Phase

• Post-Implementation Review
• Identify Errors
• Identify Enhancements
• Monitor System Performance