The following table shows the current state of a relation, where C is the key of...
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The following table shows the current state of a relation, where C₁ is the key of the relation. Which of the following options are correct? (Select all correct choices) C₁ C₂ C₁ 1 1 2 1 3 4 5 6 1 2 23 C4 Cs George Anna 42 George Chris 42 George Anna 42 John Nek 2 John Chris 1 Marina Anna 3 Select one or more alternatives: We cannot be certain whether the functional dependency C₂ C3 holds. The functional dependency {C3, C4)→ C5 may hold. All attributes are functionally dependent on C₁. The functional dependency C3 C4 may hold. The functional dependency C3→ C, may hold. The functional dependency C₁→ C4 holds. The following table shows the current state of a relation, where C₁ is the key of the relation. Which of the following options are correct? (Select all correct choices) C₁ C₂ C₁ 1 1 2 1 3 4 5 6 1 2 23 C4 Cs George Anna 42 George Chris 42 George Anna 42 John Nek 2 John Chris 1 Marina Anna 3 Select one or more alternatives: We cannot be certain whether the functional dependency C₂ C3 holds. The functional dependency {C3, C4)→ C5 may hold. All attributes are functionally dependent on C₁. The functional dependency C3 C4 may hold. The functional dependency C3→ C, may hold. The functional dependency C₁→ C4 holds.
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Related Book For
Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
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