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Table

Former Member
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687

Hi,

What is mean by Transparent table and Master Table?

Thank You.

Regards,

Dhana

1 ACCEPTED SOLUTION
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p291102
Active Contributor
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660

Hi,

The Different Types of SAP Tables

What is transparent, cluster and pool table? Where and when we use these tables?

Transparent Table : Exists with the same structure both in dictionary as well as in database exactly with the same data and fields.

Pooled Table : Pooled tables are logical tables that must be assigned to a table pool when they are defined. Pooled tables are used to store control data. Several pooled tables can be cominied in a table pool. The data of these pooled tables are then sorted in a common table in the database.

Cluster Table : Cluster tables are logical tables that must be assigned to a table cluster when they are defined. Cluster tables can be used to strore control data. They can also be used to store temporary data or texts, such as documentation.

Could anyone tell me what is the major difference between Standard tables, Pooled tables and Clusterd Tables?

A transparent table is a table that stores data directly. You can read these tables directly on the database from outside SAP with for instance an SQL statement.

Transparent table is a one to one relation table i.e. when you create one transparent table then exactly same table will create in data base and if is basically used to store transaction data.

A clustered and a pooled table cannot be read from outside SAP because certain data are clustered and pooled in one field.

One of the possible reasons is for instance that their content can be variable in length and build up. Database manipulations in Abap are limited as well.

But pool and cluster table is a many to one relationship table. This means many pool table store in a database table which is know as table pool.

All the pool table stored table in table pool does not need to have any foreign key relationship but in the case of cluster table it is must. And pool and cluster table is basically use to store application data.

Table pool can contain 10 to 1000 small pool table which has 10 to 100 records. But cluster table can contain very big but few (1 to 10) cluster table.

For pool and cluster table you can create secondary index and you can use select distinct, group for pool and cluster table. You can use native SQL statement for pool and cluster table.

A structure is a table without data. It is only filled by program logic at the moment it is needed starting from tables.

A view is a way of looking at the contents of tables. It only contains the combination of the tables at the basis and the way the data needs to be represented. You actually call directly upon the underlying tables.

Thanks,

Shankar

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Simha_
Product and Topic Expert
Product and Topic Expert
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660

Hi,

Transparent table is a type of table in which we stored data..

There is no table such as master table physically,

but if the table contains master data then it can be called as master table.

Master data is data which desn't change often such as materials, customer and all..

Cheers,

Simha.

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anversha_s
Active Contributor
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660

hi,

chk this . it is answetred there.

Regards

Anver

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Former Member
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660

Hi

Transparent Table : Exists with the same structure both in dictionary as well as in database exactly with the same data and fields.

there is no master table but

Master data is data which is frequently read, but rarely updated.

regards

shiva

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p291102
Active Contributor
0 Likes
661

Hi,

The Different Types of SAP Tables

What is transparent, cluster and pool table? Where and when we use these tables?

Transparent Table : Exists with the same structure both in dictionary as well as in database exactly with the same data and fields.

Pooled Table : Pooled tables are logical tables that must be assigned to a table pool when they are defined. Pooled tables are used to store control data. Several pooled tables can be cominied in a table pool. The data of these pooled tables are then sorted in a common table in the database.

Cluster Table : Cluster tables are logical tables that must be assigned to a table cluster when they are defined. Cluster tables can be used to strore control data. They can also be used to store temporary data or texts, such as documentation.

Could anyone tell me what is the major difference between Standard tables, Pooled tables and Clusterd Tables?

A transparent table is a table that stores data directly. You can read these tables directly on the database from outside SAP with for instance an SQL statement.

Transparent table is a one to one relation table i.e. when you create one transparent table then exactly same table will create in data base and if is basically used to store transaction data.

A clustered and a pooled table cannot be read from outside SAP because certain data are clustered and pooled in one field.

One of the possible reasons is for instance that their content can be variable in length and build up. Database manipulations in Abap are limited as well.

But pool and cluster table is a many to one relationship table. This means many pool table store in a database table which is know as table pool.

All the pool table stored table in table pool does not need to have any foreign key relationship but in the case of cluster table it is must. And pool and cluster table is basically use to store application data.

Table pool can contain 10 to 1000 small pool table which has 10 to 100 records. But cluster table can contain very big but few (1 to 10) cluster table.

For pool and cluster table you can create secondary index and you can use select distinct, group for pool and cluster table. You can use native SQL statement for pool and cluster table.

A structure is a table without data. It is only filled by program logic at the moment it is needed starting from tables.

A view is a way of looking at the contents of tables. It only contains the combination of the tables at the basis and the way the data needs to be represented. You actually call directly upon the underlying tables.

Thanks,

Shankar

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Former Member
0 Likes
660

Hi ,

Transparent Tables :

See for Examle Sales orders are created daily , Similarly Purchase Orders , These are called Transactions and the data that we enter in these are Transaction data , They go and got update in Transaction Table , We can Change the data later also ( Eg : Reducing the Purhase Quantity ) , So based on these Feequet changes the table use different Data class and other mechanism.

Eg : VBAK , VBAK .

Master Data :

These are the data that do not change frequently , And these need to be used in Transaction Processing .

Eg : Material Name , Cuntomer Name .

So for creating a Transaction to Purchase , We supply a Master data called

Material Name .

Master Table :

There is no specific table called as Master table. But if you create a table that has data class to support master data it can be called . But Table which has master data can be called as Master Data Table

Eg :

KNA1 : Customer Master

LFA1 : Vendor Master

Note :

During Implementations , Many BDC report will try to put data into Master data table uning transaction for creating master data such as FK01 , MM01 .