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
An open rectangle

None of these
represents a process that transforms incoming data flow(s) into outgoing data flows
identifies data flow
is a data store-data at rest, or a temporary repository of data
defines a source or destination of system data

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System Analysis and Design
In a Decision tree

the branch, to be followed, depends on the conditions and decisions, to be made
the nodes represent the conditions, with the right wise of tree listing the actions to be taken
all of the listed here
the root is drawn on the left and is the starting point on the decision sequence

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