Triggers

I generally get emails from learners about the difficulties that they face when they are appearing for an interview. Usually, in an interview, we are given real-time scenarios and asked to suggest solutions. When we have basic knowledge about things that we have acquired while reading interview questions, we face difficulties while suggesting solutions to the questions that are asked in an interview. What I believe is that we need to clarify basic concepts instead of reading interview questions. This will not only help us in clearing basic concepts but also in providing solutions to those questions that we might not have faced in real-time.

Here, I am going to cover the topic of APEX TRIGGERS IN SALESFORCE.

In this course on APEX TRIGGERS IN SALESFORCE, we are going to learn what triggers are in Salesforce and how to use triggers in real-time development, considering multiple scenarios. We will try to cover almost everything we should know about triggers, from basic to advanced.

Let us have a look at the topics that I will be covering. Click on the respective topic to learn more in detail.

TOPIC 1: WHAT IS TRIGGER?

TOPIC 2: What ARE TRIGGER EVENTS?

TOPIC 3: WHAT ARE TRIGGER CONTEXT VARIABLES?

TOPIC 4: WHAT IS BEFORE INSERT EVENT, EXPLAIN IT WITH AN EXAMPLE?

TOPIC 5: WHAT IS AFTER INSERT EVENT, EXPLAIN IT WITH AN EXAMPLE?

TOPIC 6: WHAT IS BEFORE UPDATE EVENT, EXPLAIN IT WITH AN EXAMPLE?

TOPIC 7: WHAT IS AFTER UPDATE EVENT, EXPLAIN IT WITH AN EXAMPLE?

TOPIC 8: WHAT IS BEFORE DELETE EVENT, EXPLAIN IT WITH AN EXAMPLE?

TOPIC 9: WHAT IS AFTER DELETE EVENT, EXPLAIN IT WITH AN EXAMPLE?

TOPIC 10: WHAT IS AFTER UNDELETE EVENT, EXPLAIN IT WITH AN EXAMPLE?

TOPIC 11: AVAILABILITY OF TRIGGER.NEW, TRIGGER.OLD, TRIGGER.NEWMAP,  TRIGGER.OLDMAP

TOPIC 12: USE OF TRIGGER.NEW AND TRIGGER.OLD

TOPIC 13: USE OF TRIGGER.NEWMAP AND TRIGGER.OLDMAP

TOPIC 14: USE OF TRIGGER.ISEXECUTING

TOPIC 15: HOW TO AVOID RECURSIVE TRIGGER.

TOPIC 16: BULK APEX TRIGGERS

TOPIC 17: TRIGGER BEST PRACTICES

TOPIC 18: HOW TO DO CALLOUTS FROM APEX TRIGGER

TOPIC 19: Trigger Handler Framework Salesforce

TOPIC 20: Interview questions on apex triggers in salesforce

REAL TIME SCENARIOS:

TOPIC 21: Apex trigger to avoid insertion of duplicate contact in salesforce 

TOPIC 22: Trigger to prevent deletion of account if it has associated contact in salesforce

TOPIC 23: Update Number Of Child Contacts on Account for Contact changes