System Analysis and Design
A couple:

means that the upper module has the capability of calling the lower module
None of these
None of these
is represented by a line joining two modules
is a data item that moves from one module to another

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System Analysis and Design
The rule(s) to follow in constructing decision tables is (are):

all of the listed here
the logic of the table is independent of the sequence in which conditions rules are written, but the action takes place in the order is which the events occur.
a decision should be given a name
standardized language must be used consistently.

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