ESH_S_HDB_DBTAB 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 with Schema Name" 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 TYPE ESH_S_HDB_DBTAB.
The ESH_S_HDB_DBTAB table consists of various fields, each holding specific information or linking keys about DB Table with Schema Name data available in SAP. These include OBJECT_TYPE (Object Type), NODE_NAME (Node Name), HDB_DBSCHEMA (Database Schema), HDB_DBTABNAME (Database table 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. .