Tables in Data dictionary which has many to one relationship with an underlying database table is called Pooled table. In simple words, Pooled tables appear as many tables in ABAP dictionary, but the thing is they are stored as a single table in the underlying database.

In ABAP Dictionary, you can see each and every pooled table is assigned to a Table POOL.

As it is understood that for many pooled tables in ABAP dictionary, there is a single table called as Table Pool in an underlying database. A Table Pool is an underlying database table with a special structure that enables the data of many ABAP Dictionary tables to be stored within it.

Tables M_MTVMA, M_MTVMB, M_MTVMC, M_MTVMD and M_MTVME can be SEEN in ABAP Dictionary. These all mentioned tables are Pooled Tables. All these tables have been assigned to one Table Pool i.e. M_MTVM, which will be present in the underlying database and storing data of all the five mentioned tables of ABAP Dictionary.

Pooled tables are basically used by SAP to store temporary data or customizing data. Pooled tables can also be used to store control data (such as screen sequences or program parameters).

Generally as a developer, we will NEVER CREATE a Pooled table or Table Pool. It does not mean that we cannot create them. SAP has given the OPTION to create Pooled tables through SE80 transaction and Table pool via ABAP Dictionary.

Tables in Data dictionary which has many to one relationship with an underlying database table is called Pooled table. In simple words, Pooled tables appear as many tables in ABAP dictionary, but the thing is they are stored as a single table in the underlying database.

In ABAP Dictionary, you can see each and every pooled table is assigned to a Table Pool.

As it is understood that for many pooled tables in ABAP dictionary, there is a single table called as Table Pool in an underlying database. A Table Pool is an underlying database table with a special structure that enables the data of many ABAP Dictionary tables to be stored within it.

Tables M_MTVMA, M_MTVMB, M_MTVMC, M_MTVMD and M_MTVME can be seen in ABAP Dictionary. These all mentioned tables are Pooled Tables. All these tables have been assigned to one Table Pool i.e. M_MTVM, which will be present in the underlying database and storing data of all the five mentioned tables of ABAP Dictionary.

Pooled tables are basically used by SAP to store temporary data or customizing data. Pooled tables can also be used to store control data (such as screen sequences or program parameters).

Generally as a developer, we will never create a Pooled table or Table Pool. It does not mean that we cannot create them. SAP has given the option to create Pooled tables through SE80 transaction and Table pool via ABAP Dictionary.