Question: ? ? ? ? ? ? ? a r e e s p e c i a l l y u s e f u

???????areespeciallyusefulwhenyouaretryingtodeterminewhatvaluesinrelatedtablescausereferentialintegrityproblems.
a.
Inner joins
b.
Outer joins
c.
Equijoins
d.
Theta joins

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