BUS0BKU_DAT 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 "BP: Bank Details Usages (External Data Fields)" 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_BUS0BKU_DAT TYPE BUS0BKU_DAT.
The BUS0BKU_DAT table consists of various fields, each holding specific information or linking keys about BP: Bank Details Usages (External Data Fields) data available in SAP. These include XDFBKU (Indicator: Standard Bank Details Usage), BKU_VALID_FROM (Valid From Date of a BP Bank Details Usage)... 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. .