an instance of relational schema r a b c has
An instance of relational schema R (A, B, C) has distinct values of A including NULL values. then A is a candidate key or not?
If relational schema R (A, B, C) has distinct values of A including NULL values A is not a candidate key.
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what does the term convergence mean with respect to e-commerceconvergence with respect to e-commerce the ability to leverage and integrate the
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explain how eurocurrency is createdanswer the center of the international money market is the eurocurrency market a eurocurrency is a time deposit of
an instance of relational schema r a b c has distinct values of a including null values then a is a candidate key or notif relational schema r a b c
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consider the join of a relation r with relation s if r has m tuples and s has n tuples then the maximum size of join isif r has m tuples and s has n
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