/**
  * Builds a list of columns suitable for creating this Catalog.
  *
  * @return array of SystemColumn suitable for making this catalog.
  */
 public SystemColumn[] buildColumnList() {
   return new SystemColumn[] {
     SystemColumnImpl.getUUIDColumn("CONSTRAINTID", false),
     SystemColumnImpl.getUUIDColumn("TABLEID", false),
     SystemColumnImpl.getIdentifierColumn("CONSTRAINTNAME", false),
     SystemColumnImpl.getIndicatorColumn("TYPE"),
     SystemColumnImpl.getUUIDColumn("SCHEMAID", false),
     SystemColumnImpl.getIndicatorColumn("STATE"),
     SystemColumnImpl.getColumn("REFERENCECOUNT", Types.INTEGER, false)
   };
 }