System Analysis and Design
The records in a file on magnetic tape

None of these
are meant for backup
cannot be transformed to a disk file
have to be arranged in a key sequence
can only be accessed serially

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System Analysis and Design
Acceptance testing is

is checking the logic of one or more programs in the candidate systems
making sure that the new programs do in fact process certain transactions according to Specifications
testing changes made in an existing or a new program
running the system with line data by the actual user

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