CEC07 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 "Transfer Structure for RKD_ROW_COLUMN_LAYOUT" 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_CEC07 TYPE CEC07.
The CEC07 table consists of various fields, each holding specific information or linking keys about Transfer Structure for RKD_ROW_COLUMN_LAYOUT data available in SAP. These include TEXT (Description), LENGTH (Length of entry/output field), ROUND (Factor), DECIM (Number format)... 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. .