Microsoft Dynamics Development, Extensions, and Deployment (MB6-894) Practice Exam

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Which type of exception should you handle to ensure a retry for updating records that are currently being edited by a user?

  1. UpdateConflict

  2. CodeAccessSecurity

  3. UpdateConflictNotRecovered

  4. Deadlock

The correct answer is: UpdateConflict

Handling an UpdateConflict exception is essential in scenarios where multiple users are attempting to edit the same record simultaneously in a system. When an UpdateConflict occurs, it indicates that the changes made by one user are in conflict with the changes coming from another user. By catching this exception, you can implement a retry mechanism, allowing the application to attempt the update again after resolving the conflict, such as by prompting the user to refresh their view or merging changes. In contrast, the other types of exceptions listed are not directly related to user editing scenarios. CodeAccessSecurity exceptions pertain to security permission issues and are less about data records. UpdateConflictNotRecovered indicates a situation where the system was unable to resolve a conflict through automated means, making it less effective for handling retries without specific user intervention. Lastly, a Deadlock exception typically occurs in database operations where two or more processes are waiting on each other to release resources, which requires a different resolution strategy than trivial retries, such as employing transaction management or timeouts. Therefore, focusing on UpdateConflict allows for a proactive approach to maintaining data integrity and user experience during simultaneous record updates.