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Number of parent child objects..... its urgent

Can anyone answer me the following:


Accounts and Contacts is parent child relationship which are standard objects out of box. In one of our class we attended we were told that we can only go 3 level down for parent child.


So is it that we can have Account -> Contact -> and another custom object which makes the total to 3.




As Account, Contact objects which is out of box and you can still go 3 additional levels below Contacts which could be custom objects which will give us 5 objects (i.e. 2 standard and 3 custom) related as parent child.



thank you


Relationship queries support one level of aggregate relationships (i.e. starting with a root object and asking for its children).  You can't go two levels down.  You can go up to five levels up (i.e. child -> parent -> grandparent -> great-grandparent -> great-great-grandparent).


Please see the SOQL section of our API documentation for more details.