System Analysis and Design
A data flow diagram is

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

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System Analysis and Design
A Decision table

represents the information flow
gets an accurate picture of the system
documents rules, that select one or more actions, based on one or more conditions, from a set of possible conditions.
shows the decision paths

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System Analysis and Design
In top down analyis and design

each succeeding phase is less detailed than the phase before it
each succeeding phase is as detailed as the phase before it.
each succeeding phase is more detailed than the phase before it
all of the listed here

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