Describe the Capabilities of, Use Cases for, and Implications of Roll-Up Summary Fields. PLATFORM-APP-BUILDER Practice Questions (Page 4)

Questions 16–19

1. 16expert · hard

   A company has a custom object 'Project Task' with a lookup relationship to 'Project'. The project manager wants to see the total hours logged for each project. The admin considers using a roll-up summary field but knows it won't work. What is the best alternative to achieve this requirement with minimal custom code?

   • ACreate a roll-up summary field on Project Task that sums the Hours.
   • BCreate a formula field on Project that sums the Hours from related Project Tasks.
   • CUse a Process Builder to update a custom field on Project with the total hours whenever a Project Task is created or edited.
   • DUse a workflow rule on Project Task to update the Project record with the total hours.
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   An admin creates a roll-up summary field on Account that counts the number of Contacts. The admin notices that the count is not updating when a Contact is deleted. What is the most likely reason?

   • AThe field is not supported on standard objects like Account.
   • BRoll-up summary fields are not updated when child records are deleted.
   • CThe Contact object is not in a master-detail relationship with Account.
   • DThe roll-up summary field is only updated when the parent record is saved.
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4. 18expert · hard

   An org has a custom object 'Invoice Line Item' with a lookup relationship to 'Invoice'. The finance team needs to see the total amount of all line items for each Invoice. The admin wants to avoid custom code and minimize the number of automation components. What is the best approach?

   • AUse a workflow rule on Invoice Line Item to update the Invoice with the total amount.
   • BUse a Flow to update a custom field on Invoice with the total amount whenever a line item is created, edited, or deleted.
   • CCreate a roll-up summary field on Invoice using the lookup relationship.
   • DCreate a formula field on Invoice that sums the Amount from related line items.
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   Which of the following is a valid alternative to a roll-up summary field when you need to calculate an average of child records?

   • AA formula field on the parent object.
   • BAn Apex trigger that calculates the average and updates the parent record.
   • CA workflow rule with a field update.
   • DA process builder that updates a field on the parent.
   Reveal Solution Discussion Select an answer first