CCARD_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 "Payment Cards (External Data)" 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_CCARD_DAT TYPE CCARD_DAT.
The CCARD_DAT table consists of various fields, each holding specific information or linking keys about Payment Cards (External Data) data available in SAP. These include CCNAME (Payment cards: Name of cardholder), ISSBANK (Payment cards: Issuing bank), CCTYP (Payment cards: Card category), CCLOCK (Payment Cards: Reason for Payment Card Lock)... 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. .