Cloud Kicks wants to start tracking how many shoe subscriptions have been Sold for each shoe catalog. A master-detail relationship exists between the Subscription And the shoe_c objects. Which type of field should an app builder create?
Cloud Kicks wants to count how many Subscription records are related to each Shoe record. Because a master-detail relationship already exists between Subscription and Shoe__c , the app builder should create a Roll-Up Summary field on the master object.
Salesforce documentation confirms that roll-up summary fields can count the number of detail records related to a master record. Trailhead also explains that roll-up summaries display values on the master record based on directly related detail records in a master-detail relationship.
B. Lookup field and C. Master-detail field define relationships, but the relationship already exists. D. Sum field is not a Salesforce field type.
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