System Analysis and Design
Data manipulation language (DML)

specifies for the DBMS what is required; the techniques used to process data
determine how data must be structured to produce the user's view
all of the listed here
describes how data are structured in the data base

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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
represents a process that transforms incoming data flow(s) into outgoing data flows
defines a source or destination of system data

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