System Analysis and Design
A couple:

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

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System Analysis and Design
In Decision trees

the root is drawn on the left and is the starting point on the decision sequence.
the branch depends on the condition and decisions to made
nodes represent the conditions, with the right side of tree listing the actions to be taken
All of these
None of these

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