System Analysis and Design
In Decision trees

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

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System Analysis and Design
A square symbols

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

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