单选题 What is added to a the logical model to eliminate many-to-many relationships?

单选题 Which of the following types of relationships cannot exist in a relational database?

单选题 A foreign key uniquely identifies each row in a table.

单选题 When resolving a 1 to many relationship you should add a foreign key to the entity on the many side of the relationship using the primary key of the child table.

单选题 A many-to-many relationship cannot exist in a relational database

单选题 A foreign key appears on the many side of a one-to-many relationship.

单选题 A bridging table can be used to eliminate a many-to-many relationship in a logical model.

单选题 Which of the following is used to uniquely identify each row?