System Analysis and Design
Sequential organization

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

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System Analysis and Design
A Decision table

gets an accurate picture of the system
represents the information flow
shows the decision paths
documents rules, that select one or more actions, based on one or more conditions, from a set of possible conditions.

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