Child Record delete invoking Parent trigger

Question

I have written a trigger on Parent__c Object (after insert,after update-This trigger creates a child__c record depending on few conditions). But when i am deleting child__c record, it invokes this parent object trigger and recreates a child record. FYI-There is no trigger on Child__c which may cause the Parent__c trigger to fire.Parent__c - child__c relation is Master-Detail. Please help me.is it a standard behaviour or something else?

Answer 1

Do you have roll-up summary fields in you parent object? If so, deleting the child object may change the roll-up summary field value, and thus fire the trigger on update for the parent.