System Analysis and Design
A menu-driven system

None of these
presents options and allows the user to make selections
is required only for on-line systems
increases the operator's work
can be used only by computer professionals

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System Analysis and Design
Indexed-Sequential organization

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

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