Logical Database Design A primary key may be null. 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? 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. Four relations are created. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A synonym is two or more attributes that have different names but the same meaning. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design The primary key of the new relation in a many-to-many relationship is a composite key comprised of the primary keys of each of the binary entities. False True False True 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. 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. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key is which of the following? An attribute that uniquely identifies each column Any attribute An attribute that uniquely identifies each row A derived attribute An attribute that uniquely identifies each column Any attribute An attribute that uniquely identifies each row A derived attribute ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS