Final answer:
A trigger is a database object used to perform actions when a specified event occurs. An INSTEAD OF trigger is a special type of trigger that is executed instead of the default action. Therefore, you cannot use an INSTEAD OF trigger when writing a trigger to enforce referential integrity actions.
Step-by-step explanation:
A trigger is a database object that is used to automatically perform actions when a specified event occurs. One of the events that can be used to trigger a trigger is a referential integrity action, which is an action that maintains the consistency of a relational database by enforcing a set of rules on the relationships between tables. Referential integrity actions are typically defined using a FOREIGN KEY constraint on a table.
When a trigger is written to enforce referential integrity actions, it is executed automatically when a specified event occurs, such as an INSERT, UPDATE, or DELETE operation. However, an INSTEAD OF trigger is different. It is a special type of trigger that is executed instead of the default action of the event that is being triggered. For example, an INSTEAD OF trigger can be used to perform a different action when an INSERT operation violates a referential constraint.
Therefore, the statement that if a trigger is being written to enforce referential integrity actions, you cannot use an INSTEAD OF trigger is True.