COMT_PRCAT_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 "Product Category (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_COMT_PRCAT_DATA TYPE COMT_PRCAT_DATA.
The COMT_PRCAT_DATA table consists of various fields, each holding specific information or linking keys about Product Category (Data) data available in SAP. These include AUTH_GROUP (Authorization Group), RESPONSIBLE_PERS (Business Partner GUID), OBJECT_FAMILY (Object Family), NON_SELECTABLE (Category Can Be Selected at Database Level)... 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. .