Few important points (Interview Questions of salesforce): One Object can have only two Master-Detail relationships. If we delete record A (First Master detail relationship is always primary) – then child record c will be deleted.
Full Answer
What is the relationship between two objects in Salesforce?
In Salesforce.com, Object Relationships is created between two Object. Here the custom field of an Object record contains a link in another object record. To build many custom object in Salesforce.com, relationships plays a major role. In Salesforce.com, Relationships are used to fetch data from other object records.
How many information can you have on an object in Salesforce?
3 Answers. Each object is allowed to have one or two masters, or up to 8 details. You can have a Total of 40 Relationship fields with a Maximum of 2 Master Detail Relationships. So you can have all 40 as Lookup Relationship fields, 38 Lookup and 2 MD 39 Lookup and 1 MD relationship fields on an object.
How many objects are allowed to object in master-detail relationship?
Up to 2 allowed to object. Parent field on a child is required. Access to parent determines access to children. Deleting parent automatically deletes child. A child of one master-detail relationship cannot be the parent of another. Lookup field on page layout is required.
What is a master-detail relationship in Salesforce?
In a master-detail relationship, the detail object doesn’t work as a stand-alone. It’s highly dependent on the master. In fact, if a record on the master object is deleted, all its related detail records are deleted as well. When you’re creating master-detail relationships, you always create the relationship field on the detail object.
Can an object have two masters Salesforce?
Each custom object can have up to two master-detail relationships and many lookup relationships. Each relationship is included in the maximum number of custom fields allowed. You can convert a master-detail relationship to a lookup relationship as long as no roll-up summary fields exist on the master object.
What is the limit of master detail relationship per object?
2 Master-Detail RelationshipThere is only 2 Master-Detail Relationship allowed per object and it can have up to three custom detail levels. As a best practice, don't exceed 10,000 child records for a master-detail relationship.
For which standard objects we can have master detail relationship?
You can define master-detail relationships between custom objects or between a custom object and a standard object. However, the standard object cannot be on the detail side of a relationship with a custom object.
Can a child record be a master to some other object?
Administrators can, however, allow child records in master-detail relationships on custom objects to be reparented to different parent records by selecting the Allow reparenting option in the master-detail relationship definition. You can have up to three custom detail levels.
Is master detail relationship one to many?
Salesforce supports 2 kinds of relationships like Master Detail and Lookup. They are both one-to-many relationship, and they are both defined from the many-to-one side, that is from a child to a parent.
How many Lookup relationships are allowed in an object in Salesforce?
You can have a maximum of 40 lookups on an object. You can have a maximum of two master details on an object.
What happen if child have two master records and one is deleted?
If child have two master records and one is deleted then the record is deleted and placed in the recycle bin.
Can we have orphan records in Salesforce?
Master Detail relationship in Salesforce Error. You must first create a Lookup relationship, populate the lookup field with data in all records, and then change the relationship type to Master-Detail”. This is because a Master detail relationship does not allow for orphaned child records.
Can a child object be a parent of another object in Salesforce?
A child of one master detail relationship can't become a parent of another object. To relate an object to another object, no records should exist in the child object. Rollup summary fields can only be created on Master records, which are used to calculate the sum, avg, min etc.
How many details can a master have Salesforce?
Two Master Detail relationshipsAnswer: Two Master Detail relationships are allowed per object in Salesforce.
Can we change owner of child record in Salesforce?
We can't change the owner name via child object because child has no owner field in Master- Detail relation .
Can we convert Master Detail to lookup?
Yes, We can Convert Master Detail Relationship into Lookup.