Logical Database Design When mapping a multivalued attribute into a relation which of the following is true? Four relations are created. 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. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A foreign key is which of the following? 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 The same thing as a primary key ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key is which of the following? A derived attribute An attribute that uniquely identifies each row An attribute that uniquely identifies each column Any attribute A derived attribute An attribute that uniquely identifies each row An attribute that uniquely identifies each column Any attribute ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a many-to-many unary relationship into a relation which of the following is true? Four relations are created. 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. 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 A transitive dependency is which of the following? A functional dependency between two or more nonkey attributes. A relation that is in second normal form. A relation that is in first normal form. A functional dependency between two or more key attributes. A functional dependency between two or more nonkey attributes. A relation that is in second normal form. A relation that is in first normal form. A functional dependency between two or more key attributes. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS