BBP_LANGUAGE_KEYS 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 "Web Dropdown Boxes: Language, Language ISO, Language Text" 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_BBP_LANGUAGE_KEYS TYPE BBP_LANGUAGE_KEYS.
The BBP_LANGUAGE_KEYS table consists of various fields, each holding specific information or linking keys about Web Dropdown Boxes: Language, Language ISO, Language Text data available in SAP. These include LANGUAGE_ISO (2-Character SAP Language Code), LANGUAGE_TEXT (Name of Language)... 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. .