DKC00 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 "Dynpro fields SAPMKC00" 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_DKC00 TYPE DKC00.
The DKC00 table consists of various fields, each holding specific information or linking keys about Dynpro fields SAPMKC00 data available in SAP. These include MAXTG (Total number of entries in table format), TXTBZ (Name of company code assignment), DYNPRO4 (Text field length 4 in screens), DYNPRO5 (Text field, length 5 in screens)... 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. .