Software Life Cycle - APCSA

Analysis Phase

analyze the problem to determine if a solution is feasible. Involves client, no code. determines what a program should do, not how.

Analysis Product

a requirements document/specification, describing the testable features of a program

Design Phase

how to implement the program. A critical phase: the better the design, the fewer problems experienced in later phases.

Design Product

a complete design.

Step-wise Refinement

continue to refine the design a step at a time until the design is complete

Implementation/Coding Phase

write and compile the problem code; perform some testing as you go

Implementation/Coding Phase Product

a complete program.

Integration/Testing Phase

verify the program works correctly

Integration Testing

test interaction of multiple classes

Operations/maintenance Phase

program installed at customer site for intended use (errors and desire for new capabilities are discovered, mistakes found during this phase are more expensive to fix)