System Analysis and Design
The current trend, of computer usage is mainly interactive; the trend, earlier, was

batch processing
None of these
parallel processing
random processing
multi-task processing

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System Analysis and Design
In top down analyis and design

each succeeding phase is more detailed than the phase before it
each succeeding phase is less detailed than the phase before it
all of the listed here
each succeeding phase is as detailed as the phase before it.

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System Analysis and Design
Indexed-Sequential 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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