One of the most important and common asked question on Forums and everywhere is how do I write a trigger. Coding in Apex Trigger is like going to a dentist for a root canal, you keep dreading the moment until you realize it is actually not going to hurt you. If you plan to write an Apex Trigger this quick guide will help you doing so. The first and foremost rule in writing a trigger is to remember the oldest suggestion given to the most comprehensive Hitchhikers Guide to Galaxy, ' Don't Panic. ' Writing a trigger is not a rocket science, in-fact we should thank the team at Salesforce and ForceDotCom for making everything so simple, that anyone can do it. Enough of talk, lets code. So you want to write a trigger. Let us have a glimpse of what we are going to build. The problem statement is as follows Problem: When the User is entering the Opportunity, check for the Opportunity Amount. If the Opportunity Amount is greater than 50,000. Mark the Parent Account as ...