Salesforce Platform Developer Practice Exam

Which statements are true regarding Roll-Up Summary fields? Select all that apply.

1. Advanced currency management has no effect on roll-up summary fields.

2. Validation errors can display when saving either the detail or master record.

3. Automatically derived fields are allowed in a roll-up summary.

4. Once created, you cannot change the detail object selected.

The correct answer is: Validation errors can display when saving either the detail or master record.

Roll-Up Summary fields are a powerful feature in Salesforce that allow for the aggregation of data from detail records to a master record. Understanding the implications of each statement is key to grasping the functionality of Roll-Up Summary fields. The chosen option indicating that validation errors can display when saving either the detail or master record is true. Salesforce validates data as part of its data integrity mechanisms, meaning that if there are validation rules established on either the master or detail objects, they will trigger upon the save operation. This can prevent records from being saved if they do not meet the defined criteria, leading to potential errors that must be resolved before proceeding. The other statements have specific contexts that render them incorrect. While advanced currency management does facilitate multi-currency handling, it does not impact the fundamental capabilities of Roll-Up Summary fields—this is why that choice is inaccurate. Regarding automatically derived fields, Roll-Up Summary fields work specifically with aggregate functions on the detail records, but derived fields do not support such operations. Lastly, once a Roll-Up Summary field is created, it is indeed possible to change the detail object using specific methods, thus invalidating the claim that it cannot be changed. Understanding these details aids in navigating the complexities of Salesforce features effectively.