Answer Posted / shreeshail diggi

Data class in technical settings:

The data class defines the physical area of the database
(for ORACLE the TABLESPACE) in which your table is
logically stored. If you choose a data class correctly,
your table will automatically be assigned to the correct
area when it is created on the database.

The most important data classes are (other than the system
data):

APPL0 Master data
APPL1 Transaction data
APPL2 Organizational and customizing data

Master data is data which is frequently read, but rarely
updated. Transaction data is data which is frequently
updated. Organizational und customizing data is data which
is defined when the system is initialized and then rarely
changed.

There are two more data classes available, USR and USR1.
These are reserved for user developments. The tables
assigned to these data classes are stored in a tablespace
for user developments.

Note:The data class only has an effect on table storage for
the database systems ORACLE and INFORMIX.

Thank's and Regards
Shreeshail Diggi
SAP Technical Consultant Infinite India

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