Salesforce Certified Platform App Builder — Question 214

Use case:
An object called "House" is related to Opportunity, there can be many Houses per Opportunity. On houses, we have a field named "Square feet". We need to show the total of Square feet for all houses on each Opportunity.
What type of relationship should we have?

Answer options

• A. Cross-Object
• B. Master-Detail
• C. Lookup
• D. Junction

Correct answer: B

Explanation

A Master-Detail relationship is appropriate here because it allows for the aggregation of data, such as calculating the total square footage of all Houses related to an Opportunity. In contrast, a Lookup relationship would not support roll-up summary fields, while Cross-Object and Junction relationships do not apply to this specific requirement.