BPPARTNER_ROLE 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 "Business Partner: Partner Number, External Number and Role" 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_BPPARTNER_ROLE TYPE BPPARTNER_ROLE.
The BPPARTNER_ROLE table consists of various fields, each holding specific information or linking keys about Business Partner: Partner Number, External Number and Role data available in SAP. These include BPEXT (Business Partner Number in External System), RLTYP (BP Role Category)... 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. .