BWE_ADDRK2 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 "Key Fields for BW Extraction Structure (Type 2)" 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_BWE_ADDRK2 TYPE BWE_ADDRK2.
The BWE_ADDRK2 table consists of various fields, each holding specific information or linking keys about Key Fields for BW Extraction Structure (Type 2) data available in SAP. These include OBJKEY (Address owner object ID), EXTENSION (Object key), CONTEXT (Semantic description of an object address)... 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. .