System Analysis and Design
Data manipulation language (DML)

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

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System Analysis and Design
Rapid prototyping proves the quality of a design by

having the system analyst present an overview of the design to users, programmers, and consultants
having a data flow diagram
both (a) and (b)
None of these
having a program simulate the real system

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