System Analysis and Design
Advantages of data base system is (are)

data are stored once in the data base and are easily accessible when needed
storage space duplication is eliminated
all of the listed here
all applications share centralized files

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System Analysis and Design
Acceptance testing is

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

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