Logical Database Design The relational model consists of: operations using non-SQL languages. unorganized data. data redundancy. data in the form of tables. operations using non-SQL languages. unorganized data. data redundancy. data in the form of tables. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A foreign key is which of the following? The same thing as a primary key Any attribute An attribute that serves as the primary key of another relation An attribute that serves no purpose The same thing as a primary key Any attribute An attribute that serves as the primary key of another relation An attribute that serves no purpose ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design Relations are: four-dimensional tables. three-dimensional tables. two-dimensional tables. five-dimensional tables. four-dimensional tables. three-dimensional tables. two-dimensional tables. five-dimensional tables. 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. Two relations are created. Four relations are created. One relation is created. Three relations are created. Two relations are created. Four relations are created. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a supertype/subtype relationship which of the following is true? There is no link between the supertype/subtype entities. There is no primary key/foreign key relationship between a supertype/subtype. The subtype primary key is assigned to each supertype. The supertype primary key is assigned to each subtype. There is no link between the supertype/subtype entities. There is no primary key/foreign key relationship between a supertype/subtype. The subtype primary key is assigned to each supertype. The supertype primary key is assigned to each subtype. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key may be null. False True False True ANSWER DOWNLOAD EXAMIANS APP
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