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Reference: https://trailhead.salesforce.com/en/academy/classes/dex450-build-applications-programmatically-on-the-salesforce-platform/

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England - 70,400 POUND
United State - 105,100 USD
India - 16,42,330 INR
Europe - 72,300 Euro

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Salesforce DEX-450 Exam Syllabus Topics:

Section	Weight	Objectives
Apex Classes and Interfaces	12%	- Apex Classes 1. Class structure (attributes, methods, constructors) 2. Inheritance and virtual/abstract classes 3. Access modifiers (public, private, protected, global) - Apex Interfaces 1. Interface definition and implementation 2. When to use interfaces
Visualforce Pages	8%	- VF Standard Components 1. , 2. Action methods and pageReference 3. , , - VF Page Basics 1. Visualforce expressions 2. component structure 3. Controllers and controller extensions
Apex Testing	13%	- Test Classes 1. @isTest annotation 2. Test data creation methods 3. Test.startTest() and Test.stopTest() - Testing Best Practices 1. Using seeAllData=false for isolated tests 2. Assert statement usage 3. Coverage requirements (75% for deployment)
Asynchronous Apex	10%	- Batch Apex 1. Database.Batchable interface 2. Database.Stateful 3. start(), execute(), and finish() methods - Future Methods 1. @future annotation 2. AsyncRequestLimit exceeded handling
Apex Transaction Management	10%	- Transaction Control 1. Savepoint and rollback 2. Database methods with allOrNone parameter 3. System.debug() usage - Governor Limits 1. DML statement limits 2. CPU time and heap size limits 3. SOQL query limits
Working with Data - SOQL and SOSL	15%	- SOQL (Salesforce Object Query Language) 1. Relationship queries (parent-child, child-parent) 2. Basic SOQL queries 3. Query options (LIMIT, ORDER BY, WHERE) 4. Aggregate functions (COUNT, SUM, AVG, MIN, MAX) - SOSL (Salesforce Object Search Language) 1. SOSL syntax and use cases 2. Returning sObjects from SOSL
Apex Triggers	12%	- Trigger Syntax and Context Variables 1. Trigger.newMap and Trigger.oldMap 2. Trigger events (before insert, after insert, etc.) 3. Trigger.old and Trigger.new context variables - Trigger Best Practices 1. One trigger per object pattern 2. Recursive trigger prevention 3. Handler class patterns
Apex Fundamentals	10%	- Apex Primitives 1. Integer, Double, Long, String, Boolean types 2. ID and sObject types 3. Date, Datetime, Time classes - Apex Basics 1. Apex operators and control flow statements 2. Using SOQL to query Salesforce data 3. Apex variables and data types 4. DML operations (insert, update, delete, etc.)

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Different versions to be chosen

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Salesforce DEX-450 Exam Syllabus Topics:

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