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 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? Three relations are created. Two relations are created. Four relations are created. One relation is created. Three relations are created. Two relations are created. Four relations are created. One relation is created. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A relation has which of the following properties? The order of the columns is significant. Each row is not unique. Each relation has a unique name. Attributes can have the same name within a given table. The order of the columns is significant. Each row is not unique. Each relation has a unique name. Attributes can have the same name within a given table. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design Relations are: five-dimensional tables. two-dimensional tables. three-dimensional tables. four-dimensional tables. five-dimensional tables. two-dimensional tables. three-dimensional tables. four-dimensional tables. 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 Fourth normal form Third normal form Second normal form First normal form Fourth normal form Third normal form ANSWER DOWNLOAD EXAMIANS APP
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