Both sides of a relationship must have the same number of columns. (Visual Database Tools)

When creating a composite foreign key relationship, both sides of the relationship must have the same number of columns. Make sure the number of columns you've selected matches the number of columns in the target table.

For more information, see How to: Create Relationships Between Tables (Visual Database Tools).

See Also

Concepts

Error Messages in Visual Database Tools

Other Resources

Types of Table Relationships (Visual Database Tools)

Help and Information

Getting SQL Server 2005 Assistance