System Analysis and Design
An open rectangle

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

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System Analysis and Design
In Decision trees

All of these
nodes represent the conditions, with the right side of tree listing the actions to be taken
the root is drawn on the left and is the starting point on the decision sequence.
the branch depends on the condition and decisions to made
None of these

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