A foreign key is an attribute (or combination of attributes)whose value is unique across all occurrences of a relation.
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Q18: Each _ of a relation corresponds to
Q19: During logical database design,you must account for
Q20: In a relation,the sequence of columns can
Q21: A functional dependency between _ key attributes
Q22: In _ normal form,non-primary key attributes do
Q24: In _ normal form,each non-primary key attribute
Q25: Each relationship in an E-R diagram must
Q26: Describe normalization rules.
Q27: De-normalization is a process for converting complex
Q28: What are the four key steps to
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