| http://www.w3.org/ns/prov#value | - The program storage device of claim 2, wherein if said root is a join operation, said second of a plurality of procedures of said uniqueness process further comprises the steps of:defining a strongly bound set of said attributes as the union of a strongly bound set of the left child and the strongly bound set of the right child; and defining a weakly bound set of said attributes as the union of a
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