System Analysis and Design
Structured Programming involves

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

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System Analysis and Design
Indexed-Sequential organization

uses an index for each key type
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

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System Analysis and Design
Acceptance testing is

testing changes made in an existing or a new program
is checking the logic of one or more programs in the candidate systems
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

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