Within Data Administration, constraint definitions are given default names as defined in the following table.

Table 1. Default constraint definition names

Constraint definition type	Default constraint definition name
Primary key	_PKC_ table-name-index-name- idx
Unique key	_UKC _table-name-index-name- idx
Foreign key	_FKC _parent-index-child index- idx
Check	_CC _table-name-field-name- idx
Default	_DC _table-name-field-name- idx
Clustered index	_CKC _table-name-index-name -idx