System Analysis and Design
An indexed file offers the facility of a Random file and the access method of a

Sequential file
None of these
direct access file
indexed file
random access file

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System Analysis and Design
A square symbols

defines a source or destination of system data
None of these
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
identifies data flow

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