Description
Generally we have relationships in Salesforce
i.e. Master-Detail and Lookup Relationships. The main difference between these two
relationships is when we delete parent record the child record will delete automatically
in Master-Detail but not in Lookup. Now the scenario is, by using Lookup relationship
also the records should delete as in Master-Detail. This we can achieve by
writing trigger on Parent Object.
Steps for the scenario
Step 1: Create Custom Object,Fields
and Records
Object Name : Parent__c
Step 2 : Create Custom Object,Fields
and Records
Object Name : Child__c
Step 3 : Create Lookup Relationship
between the two objects(i.e. Parent and Child) which you have created.
Step 4 : Write Trigger on Parent
Object. Check the active check box
Step 5 : Delete the record in Parent
object and check the child object records
Output:
Interview Questions
- What is the difference between Master-Detail and Lookup Relationship?
- What is the relationship between Account and Contact objects?
- What is Trigger and its syntax ?
- How many events present in Trigger?
- What is the difference between Trigger.new and Trigger.old?
- Why we are using before event in this Trigger?
- Why we are using Trigger.old in this scenario?
