Salesforce Platform Developer Practice Exam 2025 – Complete Exam Preparation

The maximum number of master-detail relationships that can be created on a single object is two. This limitation is significant in Salesforce because master-detail relationships enforce a specific level of dependence between the parent and child objects, where the child object's lifecycle is tightly bound to the parent.

When you create a master-detail relationship, the child record inherits ownership and sharing settings from the parent. Each object can also have multiple lookup relationships; however, the specific limit on master-detail relationships ensures that the hierarchical structure remains manageable and that the data integrity between the parent and child is maintained effectively.

In addition to these two master-detail relationships, you can also create an unlimited number of lookup relationships on the same object, which gives developers flexibility in designing their data model while adhering to the constraints of parent-child dependencies. Understanding this design limitation is crucial for effectively structuring data in Salesforce.