ESH_S_HDB_DBTAB_DBSCHEMA is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "DB Table / DB Schema Details" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_ESH_S_HDB_DBTAB_DBSCHEMA TYPE ESH_S_HDB_DBTAB_DBSCHEMA.
The ESH_S_HDB_DBTAB_DBSCHEMA table consists of various fields, each holding specific information or linking keys about DB Table / DB Schema Details data available in SAP. These include HDB_DBTABNAME (Database table name), IS_DOMAINBASED (Character Field Length 1), ATTR_DOMVALUE_L (Database Table Attribute Name), ATTR_DOMALANGU (Database Table Attribute Name)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .