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Apex Triggers - 15 (Amazon Interview Question)

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  1. Scenario Overview This automation solves an Amazon Interview Question based on a parent-child relationship between a parent object, Tax_Firm__c , and a child object, Employee__c . The parent features two currency fields: Max_Salary__c and Min_Salary__c . The system must dynamically recalculate and roll up the highest and lowest employee salary values to these parent fields whenever any child employee record is inserted, updated, deleted, or undeleted . Additionally, the solution handles the edge case where all related employees are deleted from a firm, safely resetting the parent summary values to zero instead of leaving stale metrics behind . or Show the Min & Max Salary of Employee records on the Parent Company record. 2. Apex Handler Class java public class EmployeeTriggerHandler { public static void updateSalaryRollups ( List < Employee__c > newEmployees , Map < Id , Employee__c > oldEmployeeMap ) { Set < Id > taxFirmIds = new...
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Apex Triggers - 16 (TCS Interview Question)

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  1. Scenario Overview This automation addresses a TCS Interview Question involving roll-up style calculation across parent-child relationships. The Account object contains a custom text field named Max_OPP__c . The requirement mandates that this field must always display the Name of the related Opportunity record that has the highest Amount . Because this value can change across any data mutation phase, the trigger handles a full suite of events ( after insert , after update , after delete , and after undelete ) to safely re-calculate metrics on parent Accounts. or Update the Parent Account field with the Opportunity Name that has the Highest Amount. 2. Apex Handler Class java public class OpportunityTriggerHandler { public static void updateMaxOpportunityName ( List < Opportunity > newOpps , Map < Id , Opportunity > oldOppMap ) { Set < Id > accountIds = new Set < Id >(); // Phase 1: Track all impacted Account IDs acros...
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