The document provides an overview of systems analysis and design (SAD). It discusses that SAD is the process of understanding what an information system should do through analysis, and specifying how it will be implemented through design. It also outlines some key aspects of SAD including the importance of good requirements gathering and design. The document aims to give the reader a basic understanding of SAD concepts.

1. SYSTEMS ANALYSIS AND DESIGN INTRODUCTION

5. Information Systems Engineering! Software Engineering! Information Systems Development! Systems Engineering! Systems Analysis and Design! Other names...! Which one? Is there an “official” name?

7. An idea Analysis Design and Implementation Completed Information System SYSTEMS ANALYSIS AND DESIGN: A Condensed (Informal) Perspective Time

9. System Natural Fabricated Information Systems Others Automated Information Systems Others

13. System Model Hierarchy Water Vehicles Cruise Ship Staterooms Suprasystem System Subsystem “ bigger” “ smaller” Template Example

20. Systems Analyst’s interactions with people during Systems Analysis & Design SYSTEMS ANALYST Users* Steering Committee* Vendors Programmers & Tech. Staff Database Administrators Managers* * = Stakeholders Systems Analyst may be acting as a Project Manager for some of these interactions.

24. Requirements Specification (3) General Model of Information Systems Development (“Partnership”) Stakeholder Information Technology Staff Analysis Design and Implementation Requirements (1) Continued Involvement (5) Information System (6) Problem Definition Skills (2) Problem Solution Skills (4)

29. Sequential or Traditional SDLC 1. Planning for an information system 2. Feasibility Study (optional) 3. Requirements Determination (gathering) 4. Conceptual design 5. Physical design and/or purchase and/or prototyping 6. Conversion from current system to new/changed system 7. Training 8. Implementation 9. Evolution for enhancements and maintenance Waterfall or Staircase SDLC Planning Feasibility Study Requirements Determination Conceptual Design Physical Design Conversion Training Implementation Evolution “ Begin” “ End” “ Begin” “ End”

30. Planning Feasibility Study Requirements Determination Conceptual Design Physical Design Conversion Training Implementation Evolution Iterative SDLC Risk Analysis Spiral SDLC SDLC Activities Verification/Test

31. Boehm, 1988