Chapter 7 Preliminary Construction The broad scope of implementation

1. Chapter 7 • Preliminary Construction • The broad scope of implementation • Preliminary construction in the SDLC • Preliminary construction activities • Preliminary construction management

2. The Broad Scope of Implementation Multi-phased Structure Fig 7.1: A Structure of Implementation

3. The Broad Scope of Implementation Checklist Fig 7.4: Checklist of Implementation Activities

4. Preliminary Construction in the SDLC Fig 7.2: Preliminary Construction Phase Overview

5. Preliminary Construction in the SDLC • Steps • Construct new system software modules and test data • Demonstrate the modules to users and project sponsors • Activities • Prepare physical facilities • Install hardware • Install/code software • Build test files • Prepare training materials

6. Preliminary Construction in the SDLC The activities span multiple project phases Fig 7.5: Preliminary Construction Activities Span Multiple Phases

7. Preliminary Construction Activities • Prepare physical facilities • Minimal for PCs, a full-scale construction project for larger systems • Install hardware • RFPs, vendor proposals, vendor selection

8. Preliminary Construction Activities • Install/code software • Development environments Fig 7.6: Coding and Unit Testing Occur in the First of Four Software Staging Environment

9. Preliminary Construction Activities • Install/code software • The iterative process of testing • Fig 7.7: Software Integration Process: Testing and Revising

10. Preliminary Construction Activities • Install/code software • The development sandbox environment should include • Short data files • Copies of the latest software • Copies of JCL language • Systems documentation • Change log

11. Preliminary Construction Activities • Install/code software • Advantages of a development sandbox environment • Reduce the chance of introducing errors into the production environment • Reduce the risk of not finishing all functions • Save time and money • Eliminate production environment interference

12. Preliminary Construction Activities • Install/code software • Selecting and installing purchased software Table 7.1: Evaluation of Development Languages: JAVA AND C++

13. Preliminary Construction Activities • Install/code software • Responsibility for custom coding depends on • Availability of development tools • Hardware complexity • The functionality versus efficiency issue • Expected frequency of change and volume of exception reports

14. Preliminary Construction Activities • Install/code software • Programming standard guidelines for spreadsheet development • Know your problem • Design modules top down • Keep modules small • Document your work • Organize your spreadsheet

15. Preliminary Construction Activities • Build test files • Testing all transaction combinations using decision logic tables (DLTs) • Fig 7.8: The Format of a Decision Logic Table

16. Preliminary Construction Activities • Build test files • A “high-level” application example Fig 7.9: A Decision Logic Table of Key Custom Software Decisions

17. Preliminary Construction Activities • Build test files • An example of program logic • Fig 7.10: A Decision Logic Table of Credit Approval

18. Preliminary Construction Activities • Prepare training materials • Advantages of a separate training environment • Reduce the chance of introducing errors into the production environment • Reduce the risk of not training all functions • Save time and money • Eliminate interference with production

19. Preliminary Construction Activities • Prepare training materials • The training environment should include • Short data files that match training instructions • Training instructions • Feedback of the results of training actions

20. Preliminary Construction Management Managing project direction Fig 7.11: JAD Review and Confirmation Workshop

21. Preliminary Construction Management Managing scope, schedule, and resources Fig 7.12: Balancing Scope, Schedule, and Resources