Z
   b 1                     PHASE_DESC C G&   
           PHASE_NO   C7 G
   
           
  Requirements Analysis & Prototype     Phase I    System Design                         Phase II   Develop Unit & Integration Test Proc. Phase III  Detail Design, Write Code & Test Proc.Phase IV   Acceptance Tests                      Phase V    Life Cycle Maintenance                Phase VI  Life Cycle Maintenance                Phase VI