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

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

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

all of the listed here
to identify the top level functions by combining many smaller components into a single entity
to prepare flow charts after programming has been completed
to identify a top level function an d then create a hierarchy of lower-level modules and components.

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