System Analysis and Design
A data flow diagram is

None of these
All of these
mainly used at the systems specification stage.
the primary output of the systems design phase
the modern version of flowchart

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System Analysis and Design
Data manipulation language (DML)

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

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