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table pools , pooled tables , table clusters


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What is a table pool?

What are pooled tables?

What is a table cluster?

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A table pool (or pool) is used to combine several logical tables in the

ABAP/4 Dictionary. The definition of a pool consists of at least two keys

Fields and a long argument field (VARDATA).


These are logical tables which must be assigned to a table pool when they

are defined. Pooled tables can be used to store control data (such as

Screen sequences or program parameters).


A table cluster combines several logical tables in the ABAP/4 Dictionary.

Several logical rows from different cluster tables are brought together

in a single physical record. The records from the cluster tables

assigned to a cluster are thus stored in a single common table in the


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