PRODUCT IMPLEMENTATION Chapter 8 Tawatchai Iempairote September 23, 2041

AGENDA  Design Completion Criteria  Implementation Standards  Implementation Strategy  Reviews and Inspections  Implementation Process

Design Completion Criteria  For large systems, high-level design often requires several stages ：  At the first level, you subdivide the system into subsystems, components, or modules. DES1, DESn  If these subsystems are reasonably large, repeat the high-level design process for each subsystem or component ；  At the end, you should have the external specifications for each subsystem, component, or module and should also have the detailed design of the highest level logic for the system.

Implementation Standards The implementation standards add to and extend the standards defined during the design phase  Standards review  Naming, interface, and message standards  Coding standards  Size standards  Defect standards  Defect prevention

Implementation Standards: Standards Review  Review the name, interface and message standards developed during the design phase  Check that the list of the reusable routines is complete and that all the team members are using it  Review the name glossary: complete & used  Check the component and subelement names and review the shared variable, parameter and file names for consistency  Check the standard interfaces and messages. Start with reasonable draft Known & used by all team members

Implementation Standards: Coding Standards  Same language, same standards.  Ensured that the entire team agree to use the same standard.  The commenting practices => speed code review + enhance + code sharing REUSE

Implementation Standards: Size Standards Some product elements might need size measures.  Requirements (SRS) (count text page, paragraph, shall statement)  High-Level Design (templates pages, txt lines, use cases)  Detailed design (pseudocode txt lines, LOC)  Screens & Reports  Databases  Messages  Text scripts & test materials

Implementation Standards: Defect Prevention  Pick the defect types that seem to be causing the most trouble. These defects may waste the most test time, be hardest to diagnose and fix, or otherwise be most annoying.  Examine a number of defects of this type to identify particular defect causes and divide which ones to address.  When you see a defect you think you can prevent, make a process change to prevent it.  Assuming this action is effective, start looking for the next defect category and handle it the same way.  (initialize variable => coding standards) An understanding of defect causes can help in defect prevention

Implementation Strategy The implementation strategy should generally conform to the design strategy.  Review (detail => big picture)  Reuse (use standard comment)  Testing

Reviews and Inspections  Many implementation defects are simple transcription mistakes that result from random keystroke errors.  Finding some of these errors in test can be exceptionally hard.  Reviews and inspections can consider all the paths and data values for a logical program segment.  That is why reviews and inspections are much more efficient than testing.

Design Inspections  It is hard to find sophisticated design defects when doing a review or inspection of a source program.  To produce quality programs, you must produce thorough and complete design documents and then review, inspect, and fix them before you start coding.

Implementation Process Entry Criteria  A completed development strategy and plan  Completed, reviewed and updated SRS and SDS specifications  A defined and documented coding standard  Available copies of routine functional specification list, name glossary, and all the other standards the team has adopted.

Implementation Planning  The development manager leads the work to Define and plan the implementation tasks ( SUMP, SUMQ). Task Allocation  The team leader allocates the tasks among the team members and obtains commitments for when they will complete these tasks.

Detailed Design and Design Review  The engineers produce the detailed design.  Do a design review using thorough design review methods.  Complete forms LOGD and LOGT.

Unit Test Plan  The engineers produce the unit test plans.  The engineers follow script UT to develop the unit test cases, test procedures and test data.

Detailed-Design Inspection  The quality/process manager leads the team in a DLD inspection of each component.  Complete forms LOGD and INS.

Detailed-Design Inspection  The quality/process manager leads the team in a DLD inspection of each component.  Complete forms LOGD and INS.

Coding and Code Review  The engineers produce the component source code.  Do a code review using a personal checklist.  Compile and fix the code until it compiles without error.  Complete forms LOGD and LOGT.

Code Inspection  The quality/process manager leads the team in a code inspection of each component.  Complete forms INS, LOGD and LOGT.

Unit Test  The engineers, following script UT  Conduct the unit tests.  Complete forms LOGD and LOGT.

Component Quality Review  The quality/process manager reviews each component’s data to determine if component quality meets established team criteria.  If so, the component is accepted for integration testing.  If not, the quality/process manager recommends  Either that the product be re-inspected and reworked  Or that it be scrapped and redeveloped.

Component Release  When the components are satisfactorily implemented and inspected, the engineers release them to the support manager.  The support manager enters the components in the configuration management system.

Exit Criteria  Completed, reviewed, and inspected components.  Completed INS/LOGD forms for the design and code inspections.  Updated SUMP, SUMQ, SUMS, LOGT LOGD.  Updated project notebook.