It is possible to enhance CCDB as described in the 'How to enhance ...' pages for which we have inserted the links. Please note that CCDB and the CSA applications are developed for technical configuration data. It is not supposed to store and display a high number of records per config store. The delivered config store hold at maximum several thousand records.
Thus, please take care that a custom config store does not get more than 50000 records.
Reserved words of HANA(opens in new tab) can't be used for store columns.