System Analysis and Design
The rule(s) to follow in constructing decision tables is (are):

the logic of the table is independent of the sequence in which conditions rules are written, but the action takes place in the order is which the events occur.
a decision should be given a name
all of the listed here
standardized language must be used consistently.

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System Analysis and Design
Direct-access organization

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
uses an index for each key type

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System Analysis and Design
In the system concepts, term Integration

means that parts of the computer system depend on one another
refers to the holism of systems
refers to the manner in which each component functions with other components of the system.
implies structure and order

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