CKI_W01_ML 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 "Currency fields closing (prices and values)" 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_W01_ML TYPE CKI_W01_ML.
The CKI_W01_ML table consists of various fields, each holding specific information or linking keys about Currency fields closing (prices and values) data available in SAP. These include PVPRS (Periodic unit price), SALK3 (Value of total valuated stock), SALKV (Value based on the periodic unit price (only with pr.ctrl S)), PEINH (Price unit)... 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. .