System Analysis and Design
Pointers are useful in

None of these
All of these
Traversing a linked list
Pointing mistakes in input data
Locating a particular sector of a magnetic disk

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System Analysis and Design
Direct-access organization

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

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