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Question 46/84
A developer created an Apex class that updates an Account based on input from a Lightning web component that is used to register an Account. The update to the Account should only be made if it has not already been registered.
What should the developer do to ensure that users do not overwrite each other's updates to the same Account if they make updates at the same time?
What should the developer do to ensure that users do not overwrite each other's updates to the same Account if they make updates at the same time?
Recent Comments (The most recent comments are at the top.)
The correct answer is D. Use FOR UPDATE in a SOQL query.
Using FOR UPDATE in a SOQL query locks the records that are returned by the query. This prevents other users from updating the same records at the same time and overwriting each other's changes. The lock is released when the transaction completes.
Using CastiCase.update(account, false) does not prevent concurrent updates, it only allows partial success of the DML operation. Adding a try/catch block around the update does not prevent concurrent updates, it only handles any exceptions that might occur. Using upsert instead of update does not prevent concurrent updates, it only inserts new records or updates existing ones based on the ID field.
https://developer.salesforce.com/forums/?id=906F00000008wClIAI