System Analysis and Design
Structured Programming involves

all of the listed here
localisation of errors
decentralisation of program activity
functional modularisation

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System Analysis and Design
Indexed-Sequential organization

stores records sequentially but uses an index to locate records
means storing records in contiguous blocks according to a key
has records placed randomly throughout the file
uses an index for each key type

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System Analysis and Design
Unit testing is

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

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