CCM_CHKTAB 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 "Layout for ALV Grid" 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_CCM_CHKTAB TYPE CCM_CHKTAB.
The CCM_CHKTAB table consists of various fields, each holding specific information or linking keys about Layout for ALV Grid data available in SAP. These include OBJTYPE (Symbol for Object Category), IDENTIFIER (Object Identifier), MATNR (Material Number), QUANTITY (Quantity (in Component Variant))... 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. .