PRDMS_CME_ST_REF 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 "Characteristic: Data Reference" 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_PRDMS_CME_ST_REF TYPE PRDMS_CME_ST_REF.
The PRDMS_CME_ST_REF table consists of various fields, each holding specific information or linking keys about Characteristic: Data Reference data available in SAP. These include PRODUCT_ID (Product ID), KEY_GUID (GUID of Differentiation Key (Gen. Link Handler)), KEY_TYPE (Category of Differentiation Key (Gen. Link Handler)), PRODUCT_GUID (Internal Unique ID of Product)... 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. .