System Analysis and Design
Data manipulation language (DML)

determine how data must be structured to produce the user's view
all of the listed here
describes how data are structured in the data base
specifies for the DBMS what is required; the techniques used to process data

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System Analysis and Design
Unit testing is

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
testing changes made in an existing or a new program
is checking the logic of one or more programs in the candidate system
None of these

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