Last post Feb 04, 2019 01:12 PM by PatriceSc
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Feb 04, 2019 12:50 PM|3v3rhart|LINK
Can a foreign key be designated that is not a primary ID?
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Feb 04, 2019 01:12 PM|PatriceSc|LINK
Hi,
From https://docs.microsoft.com/en-us/sql/relational-databases/tables/create-foreign-key-relationships?view=sql-server-2017
"A foreign key constraint does not have to be linked only to a primary key constraint in another table; it can also be defined to reference the columns of a UNIQUE constraint in another table."
Member
331 Points
791 Posts
Primary v Foreign Key
Feb 04, 2019 12:50 PM|3v3rhart|LINK
Can a foreign key be designated that is not a primary ID?
All-Star
45190 Points
16236 Posts
Re: Primary v Foreign Key
Feb 04, 2019 01:12 PM|PatriceSc|LINK
Hi,
From https://docs.microsoft.com/en-us/sql/relational-databases/tables/create-foreign-key-relationships?view=sql-server-2017
"A foreign key constraint does not have to be linked only to a primary key constraint in another table; it can also be defined to reference the columns of a UNIQUE constraint in another table."