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 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
Sequential organization

Stores records sequentially but uses an index to locate records
means storing records in contiguous blocks according to a key.
uses an index for each key type
has records placed randomly throughout the file
None of these

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