System Analysis and Design
In the system concepts, term Integration

means that parts of the computer system depend on one another
implies structure and order
refers to the holism of systems
refers to the manner in which each component functions with other components of the system.

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System Analysis and Design
Data Definition Language (DDL)

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
specifies for the DBMS what is required; the techniques used to process data

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System Analysis and Design
Direct-access organization

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

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