WSD_CATALOG_DATA_STY 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 "Catalog Data for Material Search" 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_WSD_CATALOG_DATA_STY TYPE WSD_CATALOG_DATA_STY.
The WSD_CATALOG_DATA_STY table consists of various fields, each holding specific information or linking keys about Catalog Data for Material Search data available in SAP. These include MATL_DESC (Material Description (Short Text)), MATL_TYPE (Material Type), MATL_GROUP (Material Group), PROD_HIER (Product hierarchy)... 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. .