CKI_MLBE_D 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 "Data from the Material Ledger History Tables" 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_CKI_MLBE_D TYPE CKI_MLBE_D.
The CKI_MLBE_D table consists of various fields, each holding specific information or linking keys about Data from the Material Ledger History Tables data available in SAP. These include BUDAT (Posting Date in the Document), MENGE (Quantity), ZEKKN (Sequential Number of Account Assignment), KALNR (Cost Estimate Number for Cost Est. w/o Qty Structure)... 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. .