System Analysis and Design
An open rectangle

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
identifies data flow

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System Analysis and Design
Direct-access organization

means storing records in contiguous blocks according to a key.
has records placed randomly throughout the file
Stores records sequentially but uses an index to locate records
uses an index for each key type

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