WSD_EINA_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 "Enhancement of EINA" 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_EINA_STY TYPE WSD_EINA_STY.
The WSD_EINA_STY table consists of various fields, each holding specific information or linking keys about Enhancement of EINA data available in SAP. These include MATNR (Material Number), MATKL (Material Group), LIFNR (Vendor Account Number), LOEKZ (Purchasing info: General data flagged for deletion)... 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. .