System Analysis and Design
Unit testing is

testing changes made in an existing or a new program
is checking the logic of one or more programs in the candidate system
running the system with line data by the actual user
making sure that the new programs do in fact process certain transactions according to Specifications
None of these

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System Analysis and Design
Indexed-Sequential organization

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
uses an index for each key type

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System Analysis and Design
Most algorithms follow the format of

Entering the input items, then displaying the input items, and then processing the output items
Entering the input items, then processing the input items, and then displaying the output items
Entering the output items, then displaying the output items, and then processing the output items
Entering the output items, then processing the output items, and then displaying the output items
Entering the input items, then processing the output items, and then displaying the output items

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