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# sys.check_constraints (Transact-SQL)
[!INCLUDE[tsql-appliesto-ss2008-asdb-xxxx-xxx-md](../../includes/tsql-appliesto-ss2008-asdb-xxxx-xxx-md.md)]

  Contains a row for each object that is a CHECK constraint, with **sys.objects.type** = 'C'.  
  
|Column name|Data type|Description|  
|-----------------|---------------|-----------------|  
|**\<Columns inherited from sys.objects>**||For a list of columns that this view inherits, see [sys.objects &#40;Transact-SQL&#41;](../../relational-databases/system-catalog-views/sys-objects-transact-sql.md).|  
|**is_disabled**|**bit**|CHECK constraint is disabled.|  
|**is_not_for_replication**|**bit**|CHECK constraint was created with the NOT FOR REPLICATION option.|  
|**is_not_trusted**|**bit**|CHECK constraint has not been verified by the system for all rows.|  
|**parent_column_id**|**int**|0 indicates a table-level CHECK constraint.<br /><br /> Non-zero value indicates that this is a column-level CHECK constraint defined on the column with the specified ID value.|  
|**definition**|**nvarchar(max)**|SQL expression that defines this CHECK constraint.|  
|**uses_database_collation**|**bit**|1 = The constraint definition depends on the default collation of the database for correct evaluation; otherwise, 0. Such a dependency prevents changing the database default collation.|  
|**is_system_named**|**bit**|1 = Name was generated by system.<br /><br /> 0 = Name was supplied by the user.|  
  
## Permissions  
 [!INCLUDE[ssCatViewPerm](../../includes/sscatviewperm-md.md)] For more information, see [Metadata Visibility Configuration](../../relational-databases/security/metadata-visibility-configuration.md).  
  
## See Also  
 [Object Catalog Views &#40;Transact-SQL&#41;](../../relational-databases/system-catalog-views/object-catalog-views-transact-sql.md)   
 [Catalog Views &#40;Transact-SQL&#41;](../../relational-databases/system-catalog-views/catalog-views-transact-sql.md)