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The Sales Person ID column in the Sales Order Header table matches the primary key column of the Sales Person table.
The Sales Person ID column in the Sales Order Header table is the foreign key to the Sales Person table.
This column becomes a foreign key in the second table. Sales Order Header table has a foreign key link to the Sales.
A table can reference a maximum of 253 other tables and columns as foreign keys (outgoing references).As shown in the following illustration, the Product ID and Vendor ID columns in the Purchasing.Product Vendor table form a composite primary key constraint for this table.By commenting, you are accepting the DISQUS terms of service.Primary key is PRIMARY KEY : (A, B, C, D, E, F, G) I HAVE COUNT OF 48052365 IN TEMP TABLE, HOWEVER I HAVE A REQUIREMENT OF UPDATING WHERE E (DATE COLUMN) IS WEDNESDAY, UPDATE THE SAME INTO MONDAY (I.