EAN_LINES 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 "Price Catalog: EAN Line Key & Reference to Object" 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_EAN_LINES TYPE EAN_LINES.
The EAN_LINES table consists of various fields, each holding specific information or linking keys about Price Catalog: EAN Line Key & Reference to Object data available in SAP. These include PRODUCTGROUP (PRICAT: PGI or assortment module from Pricat IDoc), EAN_UPC_BASE (PRICAT: EAN/UPC Code of Base Unit of Measure), VALIDITY_BASE (Price Catalog Inbound Start of Validity Period), IV_OLD (General Flag)... 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. .