Logical Database Design The entity integrity rule states that: no primary key may be equal to a value in a foreign key. no primary key can be composite. no primary key attribute may be null. no primary key may be unique. no primary key may be equal to a value in a foreign key. no primary key can be composite. no primary key attribute may be null. no primary key may be unique. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design If no multivalued attributes exist in a relation, then the relation is in what normal form? Second normal form First normal form Third normal form Fourth normal form Second normal form First normal form Third normal form Fourth normal form ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design If a relation is in third normal form, it does not need to be in second normal form. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design An enterprise key is a primary key whose value is unique for a given relation. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A composite attribute does not get mapped into a relation. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design The primary key in a relation does not need to be underlined. True False True False ANSWER DOWNLOAD EXAMIANS APP
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