How is a many-to-many relationship implemented in the database schema? All of the other choices are correct and will work A new table is created with foreign keys of both classes A key from one class becomes a foreign key in the other class. Either direction is okay. The key of each class becomes a foreign key in the opposite class What would the primary key be when one implements an association class as a database table? The table is not required to have a primary key The primary key would consists of the primary keys from the endpoint classes. O A internal object identifier created by the developer. O The primary key of either endpoint class becomes a foreign key in the table. When a foreign key constraint contains an "On Delete clause, the record (tuple) being deleted would be the cascading record (tuple) the record (tuple) containing the primary key in the referenced table the nullable records (tuples) the record (tuple) containing the foreign key