System Analysis and Design
A data flow diagram is

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

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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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