System Analysis and Design
To reconstruct a system, which of the following key element(s) must be considered :

outputs and inputs
feedback and environment
all of the listed here
control and processors.

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System Analysis and Design
Inverted list organization

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

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