Rational Programming Patterns for System z

The Data Structure entity

Data Structures describe all sets of data processed by applications. These sets of data are represented by Segments or Tables.

Data Structures are logical groups of Segments, which can be:

A Data Structure is described logically, with no physical characteristics. This description can then be reused for different purposes:
Example: A given Segment can be used in a database and in the Programs which access the database.

Information of a physical nature (such as organization, block size, description type, and so on) is added when the Data Structure is used in Programs or Database Blocks.


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