System Analysis and Design
During the maintenance phase

Programs are tested
System analysis is carried out
System requirements are established
None of the listed here

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System Analysis and Design
Unit testing is

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

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