Question

When the action cascade propagates the changes that were made to a primary key out to the associated foreign key, which of the following are the outcomes?

1) The changes are automatically reflected in the associated foreign key
2) The changes are not reflected in the associated foreign key
3) The associated foreign key is deleted
4) The primary key is deleted

Answer 1

The changes made to a primary key are automatically reflected in the associated foreign key when the action cascade propagates, ensuring referential integrity is maintained.

Step-by-step explanation:

When the action cascade propagates the changes made to a primary key out to the associated foreign key, the outcome is that the changes are automatically reflected in the associated foreign key. This means that if a primary key value is updated in a database, any foreign key that is linked to that primary key will also be updated to reflect the new value, maintaining referential integrity among the tables.