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

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