Logical Database Design A null value is assigned when no other value applies. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a ternary relationship with an associative entity into a relation which of the following is true? Three relations are created. Four relations are created. One relation is created. Two relations are created. Three relations are created. Four relations are created. One relation is created. Two relations are created. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A candidate key must uniquely identify each row. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a supertype/subtype relationship which of the following is true? The supertype primary key is assigned to each subtype. The subtype primary key is assigned to each supertype. There is no link between the supertype/subtype entities. There is no primary key/foreign key relationship between a supertype/subtype. The supertype primary key is assigned to each subtype. The subtype primary key is assigned to each supertype. There is no link between the supertype/subtype entities. There is no primary key/foreign key relationship between a supertype/subtype. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a many-to-many unary relationship into a relation which of the following is true? One relation is created. Three relations are created. Four relations are created. Two relations are created. One relation is created. Three relations are created. Four relations are created. Two relations are created. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design If no multivalued attributes exist and no partial dependencies exist in a relation, then the relation is in what normal form? Fourth normal form First normal form Second normal form Third normal form Fourth normal form First normal form Second normal form Third normal form ANSWER DOWNLOAD EXAMIANS APP
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