The columns in table '<0s>' do not match an existing primary key or UNIQUE constraint.

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Visual Database Tools

The columns in table '<0s>' do not match an existing primary key or UNIQUE constraint.

The columns on the primary key side of a foreign key relationship must participate in either a Primary Key or a Unique Constraint. After setting up a Primary Key or a Unique constraint for one of the tables you've selected, you can then define other relationships for that table.

For more information, see Creating a Unique Constraint and Defining a Primary Key.

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