Examining sample data in a table can be used to prove that a functional dependency exists,but it is of no use in proving that a functional dependency does not exist.
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Q11: When part of a key determines a
Q12: Although rare,a table in DKNF can still
Q13: In the MVD expressed as
Q14: To achieve 4NF,it is possible that there
Q15: The goal of 2NF and 3NF is
Q17: Storing a relationship in a database that
Q18: 4NF prohibits redundancies caused by MVDs.
Q19: Like 4NF,5NF also applies to M-way relationships.
Q20: A table with multiple candidate keys violates
Q21: Figuer:
The table STUDENTA has the following
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