What is the difference between master detail relationship and lookup relationship in Salesforce?

The Salesforce lookup relationship has no relation with other records. It does not depend on any other objects, whereas a master-detail relationship has an association with other records. On the other hand, the lookup relationship is just a reference. It can be even blank or NULL.

What is lookup and master detail relationship in Salesforce?

Lookup and Master-detail both are types of relationships. In lookup, both objects are not sharing properties between them means loosely coupled. In Master-detail, both objects are sharing properties with each other means tightly coupled.

What is a key difference between a master detail relationship and a lookup relationship Choose 2?

Lookups vs. Master-Detail Relationships

Lookup relationship Master-detail relationship
You can have a child record without a parent. You cannot have a child record without a parent.
You can have a maximum of 40 lookups on an object. You can have a maximum of two master details on an object.
No cascade delete. Cascade delete.

What is Salesforce lookup relationship?

A lookup relationship essentially links two objects together so that you can “look up” one object from the related items on another object. Lookup relationships can be one-to-one or one-to-many. The Account to Contact relationship is one-to-many because a single account can have many related contacts.

When should you use lookup instead of a master detail relationship?

A typical use of a Master-Detail would be the classic Sales Order and Sales Order Items objects. Lookups are generally for use where you may or may need to have a relationship between two objects (but not always). Lookups are generally used to reference commonly shared data, such as reference data.

Can you convert from master detail to lookup and vice versa?

You can convert a master-detail relationship to a lookup relationship as long as no roll-up summary fields exist on the master object. You can convert a lookup relationship to a master-detail relationship, but only if the lookup field in all records contains a value.

Can we convert lookup into master detail relationship and how?

To convert lookup to the master-detail relationship you need to give parent records on all child records. Then only you can convert a lookup relationship to a master-detail relationship if the lookup field in all the records contains a value.

What is master detail relationship?

Master-Detail Relationship in Salesforce is a parent-child relationship in which the master object controls certain behaviors of the detail object. When a record of the master object is deleted, its related detail records are also deleted.

What are the three characteristics of master detail relationship?

Features of Master-Detail Relationship A detail record cannot be created without a Master record. The permission on the detail record cannot be set. It inherits the permission from the master record. The detail record also inherits the sharing rule from master records.

Can you convert from master-detail to lookup and vice versa?

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.

Can we create both master detail relationship and lookup relationship at a time?

You cannot have 2 Master Detail relationships to the same object on another object, what you can create is either 1 M:D. relationship and a lookup to the same object or 2 lookup relationships to the same object.