Constraints MSSQL Tutorial

2>  CREATE TABLE customer_location
3> (
4> cust_id                 int    NOT NULL,
5> cust_location_number    int    NOT NULL,
6> CONSTRAINT customer_location_unique UNIQUE
7>     (cust_id, cust_location_number)
8> )
9> GO
1>
2> EXEC sp_helpconstraint customer_location
3> GO
Object Name
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
customer_location
constraint_type                                                                                                                                    constraint_name
                                                                            delete_action update_action status_enabled status_for_replication constraint_keys
-------------------------------------------------------------------------------------------------------------------------------------------------- -----------------------------------------------------
--------------------------------------------------------------------------- ------------- ------------- -------------- ---------------------- ----------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------
UNIQUE (non-clustered)                                                                                                                             customer_location_unique
                                                                            (n/a)         (n/a)         (n/a)          (n/a)                  cust_id, cust_location_number
No foreign keys reference table 'customer_location', or you do not have permissions on referencing tables.
1>
2> drop table customer_location;
3> GO