Final answer:
The false statement about master-detail relationships in the Force.com platform is the claim that the custom object on which you're defining the relationship is the master. The correct relationship is that this object would be the detail or child object, not the master.
Step-by-step explanation:
The statement that is FALSE about master-detail relationships in the Force.com (also known as Salesforce) platform is: "When defining a master-detail relationship, the custom object on which you are working is the master." In a master-detail relationship, the master is the primary object, and the detail is the related object, which is also known as the child object. Therefore, the custom object you are working on which the relationship is being defined would typically be the detail or child object, not the master.
Let's review the other statements for clarity:
- The security settings for the master record indeed control the detail record. The detail (child) record inherits the sharing and security settings from its master.
- When a master record is deleted, the related detail records are also deleted, showcasing the dependency of the detail records on the master record.
- The master-detail relationship field on the detail record is indeed required on the page layout, as it signifies the link to the master record.