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Topics of Salesforce DEX-450 Exam

Aspirants must know the exam topics before they start of preparation. Because it will help them to prepare for the below concepts. DEX-450 exam will include the following topics:

1. Objects and Fields

Describe the capabilities of objects on the Salesforce platform Create a custom object Create custom fields Create relationship fields

2. Work Effectively with Custom Objects and Fields

Create formula fields Create roll-up summary fields Describe the capabilities of record types

3. Programming with Apex

Describe key aspects of Apex that differentiate it from other languages, such as Java and C# Describe why Apex transactions and governor limits must be considered when writing Apex Execute simple Apex Use the sObject data type, the primitive data types, and basic control statements in Apex

4. Use SOQL to Query Your Org's Data

Write a basic query using Salesforce's query language, SOQL Process the result of a query in Apex Create a query dynamically at run-time Use SOQL to Query - Parent-Child Relationships Describe a relationship query Write a query that traverses a child-to-parent relationship Write a query that traverses a parent-to-child relationship

5. DML Essentials

List the differences between the ways you can invoke DML operations Write Apex to invoke DML operations and handle DML errors

6. Trigger Essentials

Describe what a trigger is used for Describe the syntax of a trigger definition Use trigger context variables

7. Apex Class Essentials

Describe how Apex classes are used Define an Apex class Determine what data an Apex class can access

8. The Save Order of Execution and Apex Transactions

Describe key points in the Order of Execution Describe how triggers fit into and can be impacted by the Order of Execution Describe the lifecycle of an Apex Transaction Describe the memory lifecycle for static variables

9. Testing Essentials

Describe Apex's testing framework Create test data Write and run an Apex test

10. Testing Strategies

Describe practices for writing code that is easy to maintain and extend Write triggers and classes that assume batches of data as input Write code that works efficiently with the database, both in querying and using DML

11. Strategies for Designing Efficient Apex Solutions

Determine your code coverage percentages Create tests using best practices

12. Trigger Design Strategies

List declarative mechanisms you can use to implement complex business logic, for what types of problems they are best used, and their limitations Describe ways in which you can use declarative functionality to improve your programmatic solutions

13. Creating Visualforce Pages

Create a Visualforce page Reference a standard controller Launch a Visualforce page using a custom button Display data from a record in a Visualforce page

14. Exploring the View and Controller Layers of Visualforce

Create a Visualforce page Display related data Invoke standard controller actions

15. Working with Custom Controllers and Controller Extensions

Create controller extensions Create a custom controller Work with properties Use PageReferences Invoke custom methods in Visualforce pages 14.Working with List Controllers and SOSL Queries

Use a standard list controller in a Visualforce page Create a SOSL query Create a custom list controller

16. Visualforce Development Considerations

Determine whether a declarative solution exists for your requirements Describe common governor limit issues and security concerns Describe Visualforce strategies Testing Visualforce Controllers Describe how a Visualforce controller interacts with the view Write tests for controller constructors Write tests for action methods, getters, setters, and properties

How to Study the Salesforce DEX-450 Exam

The DEX-450 Test can be prepared in several respects. There are many forms to train for this test. Aspirants can select the PDFs available on the official website of Salesforce and they are also able to view videos online. The Qualification Questions Team strongly maintains that information obtained from multiple testing materials and references must be tested using high-quality evaluation engines when they fulfil the actual test. Before being greenlit, all our study material is confirmed repeatedly by experts.DEX-450 exam dumps of qualification-questions will be continuously revised, so the DEX-450 Test will be mirrored into the Dex-450 practice exams of any changes to the Salesforce Agile Research Certification materials. Expert team on Exams-boost advises that you take quality notes on these subjects and that you should not neglect to follow DEX-450 exam dumps, which has been written by our expert staff.

Salesforce DEX-450 Exam Overview:

Certification Vendor:Salesforce
Exam Name:Programmatic Development using Apex and Visualforce in Lightning Experience
Exam Number:DEX-450
Exam Price:$200 USD
Related Certifications:Platform Developer II (PDII)
Salesforce Certified Administrator
Real Exam Qty:60
Certificate Validity Period:2 years (for certification)
Available Languages:English
Exam Duration:120 minutes
Exam Format:Multiple Choice, Multiple Select
Passing Score:68%
Sample Questions:Salesforce DEX-450 Sample Questions
Exam Way:In-person testing center or online proctored exam
Pre Condition:No formal prerequisites, but recommended: 1-2 years Apex development experience, completion of Salesforce Developer Beginner and Intermediate Trailhead modules
Official Syllabus URL:https://trailhead.salesforce.com/credentials/platform-developer-exam

Introduction to Salesforce DEX-450 Exam

This qualification concentrates on the programmer's validation of abilities, such as the programming of programs. Salesforce DEX-450 certification acknowledges that the applicant has the potential to conform his / her Salesforce applications to the heart of the Pinnacle programming language and the visual power diagram. The credential offers a better indicator of the competences which you have established to provide prospective employers. Professionals need to gain functional expertise in constructing and programming data objects (sObjectiles) to retrieve, modify and store data from these objects. Specify custom logic with Apex triggers and classes and use the built-in testing system to test this logic. This Guide covers all facets of the DEX-450 Test, the salary of the accredited specialist Salesforce DEX-450 and all the aspects of the Salesforce DEX-450 certification.

The Salesforce DEX-450 exam is a competency qualification test that acknowledges your capability growth. You need industry expertise to attempt the test. Professionals should execute the following duties following certification:

  • Describe how the trigger code functions in the Save Execution Order
  • Develop programmatic implementations that benefit from declarative personalizations
  • Using the combined Apex and Visual Powers evaluation system.
  • Write customizations of business logic using triggers and classes from Apex. SOQL and DML are used with these customizations.
  • Write Visualforce and code for user interface setup
  • Describe a range of the main features of multi-tenant programme architecture
  • Using a declarative GUI to build and change subjects

How to Prepare for Salesforce DEX-450 Exam

Preparation Guide for Salesforce DEX-450 Exam

Introduction

Salesforce is a solution for managing customer relationships that unite customers and companies. This is an interactive CRM platform that provides a single, shared view of every client in all the divisions including marketing, distribution, exchange, and operation. Provide the clients with the individual experience Salesforce demand 360 product via the Integrated CRM Platform. It delivers solid and related goods to boost marketing, revenue, exchange, operation, IT, and more. Salesforce is a digital cloud computing (SaaS) firm specializing in the management of client relationships (CRMs). There was a mistake. The app is now the number one of consumer satisfaction and allows organizations to track customer behavior, advertise to consumers, and more. Salesforce is common because it is bundled with features such as contact management, workflow development, task management, incentive monitoring, teamwork tools, customer experience tools, analytics, and interactive, smartphone dashboard.

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

Salesforce DEX-450 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Working with Data - SOQL and SOSL15%- SOQL (Salesforce Object Query Language)
  • 1. Aggregate functions (COUNT, SUM, AVG, MIN, MAX)
  • 2. Basic SOQL queries
  • 3. Query options (LIMIT, ORDER BY, WHERE)
  • 4. Relationship queries (parent-child, child-parent)
- SOSL (Salesforce Object Search Language)
  • 1. SOSL syntax and use cases
  • 2. Returning sObjects from SOSL
Topic 2: Apex Testing13%- Testing Best Practices
  • 1. Assert statement usage
  • 2. Coverage requirements (75% for deployment)
  • 3. Using seeAllData=false for isolated tests
- Test Classes
  • 1. Test.startTest() and Test.stopTest()
  • 2. Test data creation methods
  • 3. @isTest annotation
Topic 3: Asynchronous Apex10%- Future Methods
  • 1. @future annotation
  • 2. AsyncRequestLimit exceeded handling
- Batch Apex
  • 1. Database.Stateful
  • 2. start(), execute(), and finish() methods
  • 3. Database.Batchable interface
Topic 4: Visualforce Pages8%- VF Page Basics
  • 1. component structure
  • 2. Visualforce expressions
  • 3. Controllers and controller extensions
- VF Standard Components
  • 1. , ,
  • 2. Action methods and pageReference
  • 3. ,
Topic 5: Apex Classes and Interfaces12%- Apex Classes
  • 1. Class structure (attributes, methods, constructors)
  • 2. Inheritance and virtual/abstract classes
  • 3. Access modifiers (public, private, protected, global)
- Apex Interfaces
  • 1. When to use interfaces
  • 2. Interface definition and implementation
Topic 6: Apex Fundamentals10%- Apex Basics
  • 1. Apex operators and control flow statements
  • 2. Using SOQL to query Salesforce data
  • 3. DML operations (insert, update, delete, etc.)
  • 4. Apex variables and data types
- Apex Primitives
  • 1. ID and sObject types
  • 2. Date, Datetime, Time classes
  • 3. Integer, Double, Long, String, Boolean types
Topic 7: Apex Triggers12%- Trigger Syntax and Context Variables
  • 1. Trigger.old and Trigger.new context variables
  • 2. Trigger events (before insert, after insert, etc.)
  • 3. Trigger.newMap and Trigger.oldMap
- Trigger Best Practices
  • 1. One trigger per object pattern
  • 2. Handler class patterns
  • 3. Recursive trigger prevention
Topic 8: Apex Transaction Management10%- Governor Limits
  • 1. DML statement limits
  • 2. CPU time and heap size limits
  • 3. SOQL query limits
- Transaction Control
  • 1. Savepoint and rollback
  • 2. Database methods with allOrNone parameter
  • 3. System.debug() usage

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