What is the diff between Master Detail And Lookup

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Accepted Answer

Master Detail is a strict parent-child relationship where the child record is deleted when the parent record is deleted. Lookup is a looser relationship where the child record can exist without the parent record.

Master Detail is a required relationship, while Lookup is not required.
Master Detail relationship helps in maintaining data integrity by enforcing referential integrity, while Lookup does not enforce referential integrity.
In Master Detail relationship, security and sharing settings of the parent record are inherited by the child record, while in Lookup relationship, they are not.
Example: In a Master Detail relationship between Account and Contact, if an Account is deleted, all associated Contacts will also be deleted. In a Lookup relationship between Account and Contact, Contacts can exist without an associated Account.

What is the diff between Master Detail And Lookup

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