What is the Difference between Transparant Tables , Pooled
& cluster Tables?

Answer Posted / uma mb

These are three different kinds of table types in SAP.

The first most common type known to all is the 'Transparent
Table' which is a logical definition (in teh ABAP data
dictionary) of a physical table in the database.

Several tables logically defined in ABAP data dictionary can
be combined in a physical table (pool or cluster).

When functionally dependent data spread in many different
tables are kept in one database table, it comes to be known
as a cluster table. The key fields of these cluster tables
form the cluster key.

Pool table is just the opposite where tables are kept
together but they are not functionally dependent - rather
say all small master tables kept together as a pool would
form a pool table.

The true benefits of a cluster / pool table is data is
stored ina compressed form, so less memory space and less
network load.

There are some minus points also:

No native SQL can be used, no views, no joins, no scondary
indices, no GROUP BY, ORDER BY can be used. Table appends
not possible.

Is This Answer Correct ?    8 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

It is possible to assign a local data object defined in a subroutine or function module to a field group. State true or false. : abap modularization

889


Which type of tables used this buffer?

694


What are the control break events in abap? : abap data dictionary

708


What is an abap dictionary? : abap data dictionary

682


Search help exit details.

994






Can you assign a matchcode object to a parameter? If so how?

689


how can we use the text randomly or circularly in smartforms.... means... suppose i have 'abap' horizantally... but i want it in vertically... how can... plz any body tell me this....

1699


What is page window?

659


Differentiate between report and dialog program

687


Explain the relationship between a functional area, user group, and query when developing queries using the sap query tool?

670


Difference between /N and /BEND?

915


What does a lock object involve?

777


What is the different type of projects? : sap abap hr

596


In what ways we can get the context sensitive f1 help on a field?

697


What are the data types of internal tables?

682