System Analysis and Design
A menu-driven system

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

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System Analysis and Design
Direct-access 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
Indexed-Sequential organization

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

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