CC2S_BUFFER_DATA 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 "Semantic Key + Data Reference in C2 Server" 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_CC2S_BUFFER_DATA TYPE CC2S_BUFFER_DATA.
The CC2S_BUFFER_DATA table consists of various fields, each holding specific information or linking keys about Semantic Key + Data Reference in C2 Server data available in SAP. These include DATA_INSTANCE (Reference to Instance for C2 Server Data in Buffer)... 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. .