Description: Contains one row for each reference to a column in a check constraint.
|Column name||Description||Data type|
|TBOWNER||Authorization ID of the owner of the table on which the check constraint is defined.|
|TBNAME||Name of the table on which the check constraint is defined.|
|CHECKNAME||Name of the check constraint.|
|COLNAME||Name of the column that the check constraint refers to.|
|IBMREQD||A value of Y indicates that the row came from the basic machine-readable material (MRM) tape.|
Adapted from material found in the IBM DB2 Universal Database for z/OS V8 SQL Reference (SC18-7426-02).