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

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

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System Analysis and Design
The approach used in top-down analysis and and design is

to identify the top level functions by combining many smaller components into a single entity.
None of these
All of these
to prepare flowcharts after programming has been completed
to identify a top level function and then create a hierarchy of lower level modules and components

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