System Analysis and Design
A Decision table

gets an accurate picture of the system
represents the information flow
shows the decision paths
documents rules, that select one or more actions, based on one or more conditions, from a set of possible conditions.

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System Analysis and Design
Unit testing is

testing changes made in an existing or a new program
running the system with line data by the actual user
None of these
is checking the logic of one or more programs in the candidate system
making sure that the new programs do in fact process certain transactions according to Specifications

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