System Analysis and Design
In top down analyis and design

each succeeding phase is less detailed than the phase before it
each succeeding phase is as detailed as the phase before it.
each succeeding phase is more detailed than the phase before it
all of the listed here

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System Analysis and Design
Sequential or series testing is

making sure that the new programs do in fact process certain transactions according to Specifications
testing changes made in an existing or a new program
running the system with line data by the actual user
is checking the logic of one or more programs in the candidate system

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