System Analysis and Design
Structured design methodology is an approach to design that adheres to rales based on principles such as

bottom-up design
data flow analysis
top-down refinement
All of these
None of these

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System Analysis and Design
A couple:

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

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System Analysis and Design
An open rectangle

defines a source or destination of system data
None of these
represents a process that transforms incoming data flow(s) into outgoing data flows
identifies data flow
is a data store-data at rest, or a temporary repository of data

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