Look-up VS Master-Detail Relationship in SalesForce

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Anonymous User · Accepted Answer

"Master-detail relationship1)in MD relationship field value is mandatory2) here parent record is deleted automatically child records is deleted3) an object is allowed only 2 m-d relationship fields4) if we give any rules to parent that rules automatically goes to the child. Child does not conatin any seperate rules.5)we can directly conert m-d relationship to lookup relationship6) if we give a value to m-d relationship field that value doesnot changed.Lookup relationship1)in lookup relationship field value is not mandatory2) here parent record is deleted automatically child records are not deleted3) an object is allowed only 25 relationship fields4) here parent rules and child rules are may be same or not.5)if we cannot give a value to the lookup field then we can't directly conert lookup relationship to master-detail relationship here first we need to give a value to the lookup field.6) if we give a value to lookup relationship field we can change that value whenever we required.hope this wil help you understand the difference between the two :)"

Anonymous User · Answer

Master-detail relationship1)in MD relationship field value is mandatory2) here parent record is deleted automatically child records is deleted3) an object is allowed only 2 m-d relationship fields4) if we give any rules to parent that rules automatically goes to the child. Child does not conatin any seperate rules.5)we can directly conert m-d relationship to lookup relationship6) if we give a value to m-d relationship field that value doesnot changed.Lookup relationship1)in lookup relationship field value is not mandatory2) here parent record is deleted automatically child records are not deleted3) an object is allowed only 25 relationship fields4) here parent rules and child rules are may be same or not.5)if we cannot give a value to the lookup field then we can't directly conert lookup relationship to master-detail relationship here first we need to give a value to the lookup field.6) if we give a value to lookup relationship field we can change that value whenever we required.hope this wil help you understand the difference between the two :)

Samuel Fernandes · Answer

Master – Detail Relationship :If we delete master records then detail (Child) records are deleted.It creates the parent(master) child(Detail) relationship between objects.Child records do not have Owner fields it takes parents records owner as child records owner.We can have maximum 2 master details on an objectLook up relationship :Look up relationship creates relations between two objects.If we delete any object then other object is not deleted.We can have maximum 25 lookup on an object.

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Look-up VS Master-Detail Relationship in SalesForce

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