Salesforce Updated CRT-450 Exam Questions and Answers by jaylen

[Reference: Roll-Up Summary Fields, Calculating the line amount for each Line Item based on quantity selected and price., This calculation can be handled using formula fields or triggers on the Line Item object., Reference: Formula Fields, Moving Line Items to a different Order if a Line Item is not in stock., This requires the ability to reparent the Line Item to a different Order., In a master-detail relationship, you can enable reparenting by selecting "Allow reparenting" in the relationship field settings., Reference: Allow Reparenting in Master-Detail Relationships, Given these considerations, the appropriate relationship is:, Line Item has a re-parentable master-detail field to Order., Option D satisfies all the requirements:, Master-detail relationship allows roll-up summary fields on Order., Reparenting is enabled, allowing Line Items to be moved to a different Order., Line Item calculations can be handled on the child object., Incorrect Options:, Option A & C: Lookup relationships do not support roll-up summary fields., Option B: If the Order has a master-detail field to Line Item, it contradicts the natural parent-child relationship., Conclusion:, Option D is the correct choice as it supports roll-up summary fields, allows reparenting, and aligns with the parent-child relationship needed., ]

[Reference:, Using Standard List Controllers, Option D: Custom List Controller with recordSetVar page attribute, Incorrect., Explanation:, recordSetVar is used with standard list controllers, not custom controllers., Option A: Controller Extension and tag, Incorrect., Explanation:, There is no tag in Visualforce., Option B: Standard Controller with Custom List Controller extension, Incorrect., Explanation:, A custom list controller extension is unnecessary when using recordSetVar with a standard controller., Conclusion:, The Visualforce feature is Standard controller and the recordSetVar page attribute, which is Option C., ]

[:, Debugging with System.debug, Best Practices for Debugging, Why Other Options are Less Optimal or Incorrect:, Option B: Use the Apex Interactive Debugger to step through the code, Limited Availability: The Apex Interactive Debugger is not typically available in production environments., Requires Setup: Needs special permissions and setup, which may not be feasible., Reference: Apex Debugger, Option C: Disable the trigger in production and test to see if the issue still occurs, Risky: Disabling the trigger can disrupt business processes and data integrity., Not a Debugging Strategy: Does not help identify the cause within the code., Reference: Managing Apex Triggers, Option D: Review the Historical Event Logs to identify the source of the issue, Insufficient Detail: Event logs may not provide the necessary detail about code execution to identify the issue., Better for Auditing: More suited for tracking user actions rather than debugging code., Reference: Event Monitoring, Conclusion:, Adding System.debug statements and reviewing the resulting debug logs is the most appropriate and effective method to troubleshoot and identify the issue causing record duplication., It allows the developer to understand the code execution flow and make necessary corrections., ]