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E. Phase 5: Physical Design
In the physical design phase, which is sometimes referred to
as the technical design phase, the technical solution to the
business problem described in the logical design phase is
determined. The technical approach to building the system requires
consideration of the interfaces; that is, how the software operates
in conjunction with other applications or systems. During this
phase, the tools for building the system are described, as well as
the nature of the interfaces between the software and other
systems, the estimates of volume that requires processing, and the
timeframe for processing.
F. Phase 6: Development
In the development phase, physical system components are
constructed, documented, and verified. During this phase, the
programmers write the source code that will allow the computer to
perform the required tasks, and initial plans are made for testing
the software.
G. Phase 7: Testing
In the testing phase, the technical development portion of the
project is completed. During this phase: (i) Unit testing is
performed to determine whether the individual components of a
system are technically ready for production, (ii) integrated
systems testing is performed to determine whether all components of
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Last modified: May 25, 2011