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Technical Module E Computer-Aided Software Engineering (CASE) CASE Fundamentals

Technical Module E Computer-Aided Software Engineering (CASE) CASE Fundamentals The CASE Repository. Fig E.1: The Role of the Repository in CASE. CASE Fundamentals The CASE Documentation. Fig E.2: Some System Documentation Prepared by CASE. CASE Fundamentals Categories of CASE tools

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Technical Module E Computer-Aided Software Engineering (CASE) CASE Fundamentals

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  1. Technical Module E Computer-Aided Software Engineering (CASE) CASE Fundamentals The CASE Repository Fig E.1: The Role of the Repository in CASE

  2. CASE Fundamentals The CASE Documentation Fig E.2: Some System Documentation Prepared by CASE

  3. CASE Fundamentals • Categories of CASE tools • Upper CASE – prior to and during preliminary investigation • Middle CASE – during analysis and design • Lower CASE – during construction and installation • Integrated CASE (I-CASE) – entire SDLC

  4. CASE Fundamentals • Middle-CASE documentation includes • Data models • Process models • Object models

  5. CASE Documentation Examples A data model Fig E.3: A Data Architect Entity-Relationship Diagram

  6. CASE Documentation Examples A process model Fig E.4: A COOL: Gen Dependency Diagram

  7. CASE Documentation Examples Another process model Fig E.5: A COOL: Gen Hierarchy Chart

  8. CASE Documentation Examples And another process model Fig E.6: A COOL: Gen Action Diagram

  9. CASE Documentation Examples An object model Fig E.7: A Rational Rose Class Diagram

  10. CASE Documentation Examples Another object model Fig E.8: A Rational Rose Sequence Diagram

  11. CASE Documentation Examples And another object model Fig E.9: A Rational Rose Statechart Diagram

  12. CASE Impacts a Systems Development • Using CASE for project management • Budgeting • Forecasting, analysis, corrective actions • Work breakdown structure • Gantt charts and network diagrams • Performance tracking graphics

  13. CASE Impacts a Systems Development • How CASE affects the SDLC • Can lengthen early phases • Can reduce the time required for coding, testing, and user education • Should drastically reduce maintenance time and cost • Consistency checking detects errors earlier in the SDLC, when they are easiest and least expensive to correct.

  14. CASE Impacts a Systems Development • Evolving support • Modeling tools – from ERDs and DFDs to object diagrams • Hardware platforms – from mainframes to client/server to Web-based systems

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