Systems Development Jerry Post Copyright © 1997 OO: Chapter 3 Systems Development Jerry Post Copyright © 1997

Software Quality Correspondence/Validation Correctness/Verification Does the system meet the needs of the organization? Am I building the right product? Correctness/Verification Does the system meet the design specifications? Am I building the product correctly/does the product work?

Use-Case Method Object-oriented analysis Object-oriented design Determine system requirements Identify classes Identify class relationships Object-oriented design Define the objects and classes needed for implementation Design for reuse, simplify, find generic classes. Prototyping Object-oriented implementation Components Support tools! Use-Case (system requirements) Identify users/actors Use-case scenario to show interaction Show user goals and needs Talk with the user! Represents user-view of the system. Details in OO Chapter 6

Reusability Has my problem been solved already? Has my problem been partially solved? What has been done before to solve a similar problem? Generic classes Properties Methods Component libraries/Object repositories Naming standards Information hiding, standard interfaces