a)Phases in the waterfall model:
-Requirements analysis and definition.
-System and software design.
-Implementation and unit testing.
-Integration and system testing.
-Operation and maintenance.
b)Drawbacks:
-The difficulty of accommodating change after the process is underway.
-Inflexible partitioning of the project into distinct stages makes it difficult to respond to changing customer requirements.
-This model is only appropriate when the requirements are well-understood and changes will be fairly limited during the design process.
jim items answered the question on March 13, 2019 at 13:12
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