Final answer:
Yes, the DBMS makes the appropriate data available to the trigger code when a trigger is fired, allowing the trigger to perform operations based on the contextual data that caused the event.
Step-by-step explanation:
When a trigger is fired in a database management system (DBMS), the system does indeed make the appropriate data available to the trigger code. A trigger is a special kind of stored procedure that automatically executes when certain events occur in the database, such as inserts, updates, or deletes. The data that caused the event, often referred to as the contextual data, is made available to the trigger so that it can perform its intended operations based on that data.
For instance, if a trigger is set to execute before a row is updated in a table, the DBMS will provide the old and new values of the row to the trigger code. This enables the trigger to compare values and carry out actions accordingly, such as maintaining audit logs, enforcing business rules, or synchronizing data between tables. The availability of data within trigger code is essential for implementing complex business logic within the database layer.