EWNAVVIEW_NODE_KEY 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 "Structure with Node Key for Tree Control" 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_EWNAVVIEW_NODE_KEY TYPE EWNAVVIEW_NODE_KEY.
The EWNAVVIEW_NODE_KEY table consists of various fields, each holding specific information or linking keys about Structure with Node Key for Tree Control data available in SAP. These include NODEKEY (Tree Control: Node Key)... 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. .