Logical Database Design When mapping a ternary relationship with an associative entity into a relation which of the following is true? Four relations are created. Two relations are created. One relation is created. Three relations are created. Four relations are created. Two relations are created. One relation is created. Three relations are created. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key may be null. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design If no multivalued attributes exist in a relation, then the relation is in what normal form? First normal form Fourth normal form Second normal form Third normal form First normal form Fourth normal form Second normal form Third normal form ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A foreign key may be null and still adhere to the referential integrity constraint. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design The primary key in a relation does not need to be underlined. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key is which of the following? Any attribute A derived attribute An attribute that uniquely identifies each column An attribute that uniquely identifies each row Any attribute A derived attribute An attribute that uniquely identifies each column An attribute that uniquely identifies each row ANSWER DOWNLOAD EXAMIANS APP
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