System Analysis and Design
Indexed-Sequential organization

uses an index for each key type
has records placed randomly throughout the file
stores records sequentially but uses an index to locate records
means storing records in contiguous blocks according to a key

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System Analysis and Design
A couple:

None of these
is represented by a line joining two modules
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

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