Final answer:
In a trigger invocation, both the 'old' and 'new' contexts are used to access the records. The total number of records in a trigger invocation can vary based on the specific scenario and the logic implemented in the trigger.
Step-by-step explanation:
In a trigger invocation, both the 'old' and 'new' contexts are used to access the records. The 'old' context contains the records before they were updated or deleted, while the 'new' context contains the records after they were inserted or updated. The number of records in each context will depend on the specific trigger and the number of records being processed in that invocation.
For example, if a trigger is being invoked for 10 records in a database table, the 'old' context will contain the 10 original records, and the 'new' context will contain the 10 updated records. Therefore, in this case, the total number of records in the trigger invocation is 20.
It's important to note that the actual number of records in a trigger invocation can vary based on the specific scenario and the logic implemented in the trigger.