Exam Name: Programmatic Development using Apex and Visualforce in Lightning Experience
Certification Provider: Salesforce
Corresponding Certification: Salesforce Developer
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Salesforce DEX-450 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Programmatic Development using Apex and Visualforce in Lightning Experience |
| Exam Number: | DEX-450 |
| Related Certifications: | Salesforce Platform Developer I Salesforce Platform Developer II |
| Available Languages: | English |
| Exam Format: | Multiple choice questions (typical Salesforce training exams), Course assessment (format varies by provider) |
| Recommended Training: | Salesforce Apex Developer Guide Salesforce Visualforce Developer Guide |
| Exam Registration: | Salesforce Trailhead Training |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Instructor-led training assessment or course completion exam (varies by training provider) |
| Pre Condition: | Basic understanding of object-oriented programming and database concepts is recommended. Prior Salesforce experience is helpful but not strictly required. |
| Official Syllabus URL: | https://trailhead.salesforce.com |
Salesforce DEX-450 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Database and SOQL/SOSL | - SOQL queries
|
| Visualforce Development | - UI components
|
| Testing and Debugging | - Apex testing framework
|
| Security and Best Practices | - Governor limits
|
| Apex Triggers and Automation | - Order of execution
|
| Apex Programming Fundamentals | - Apex syntax and object-oriented concepts
|
Frequently Asked Questions for the Salesforce DEX-450 Exam
The DEX-450 exam, Programmatic Development using Apex and Visualforce in Lightning Experience, assesses whether a candidate can apply Salesforce knowledge to the skills measured by this credential. It is associated with the Salesforce Programmatic Development using Apex and Visualforce (Training Course) certification. Related credentials include Salesforce Platform Developer I, Salesforce Platform Developer II.
The stated prerequisite information for Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience is: Basic understanding of object-oriented programming and database concepts is recommended. Prior Salesforce experience is helpful but not strictly required. Before registering, review the eligibility details on the official exam page to confirm the requirements.
You can register for Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience through the following channels:
The available exam delivery format is Instructor-led training assessment or course completion exam (varies by training provider).
The following official training resources are recommended for Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience:
After reviewing these training options, you can reinforce each topic with 202 practice questions from Actual4dump.
Yes. Actual4dump provides a free PDF demo so you can review the format and quality of the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience practice questions before placing an order. Your purchase includes 365 days of free updates, and you can extend the update service after expiration at a 50% discount.
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The published Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience outline contains 6 major domains. The opening domains include:
- Apex Triggers and Automation (official weight not provided)
- Security and Best Practices (official weight not provided)
- Visualforce Development (official weight not provided)
Review the complete Exam Topics section above for every domain and subtopic before planning your study time.
Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions:
Question 1
A developer has an integer variable called maxAttempts. The developer needs to ensure that once maxAttempts is initialized, it preserves its value for the length of the Apex transaction; while being able to share the variable's state between trigger executions.
How should the developer declare maxAttempts to meet these requirements?
A. Declare maxattempts as a variable on a helper class.
B. Declare maxattempts as a member variable on the trigger definition.
C. Declare maxattempts as a constant using the static and final keywords.
D. Declare maxAttempts as a private static variable on a helper class.
Question 2
Which two events need to happen when deploying to a production org?
Choose 2 answers
A. All Apex code must have at least 75% test coverage.
B. All custom objects must have visibility set to a value other than in Development.
C. All Visual flows must have at least 1% test coverage.
D. All triggers must have some test coverage
Question 3
An Apex method, getAccounts, that returns a list of Accounts given a searchTerm, is available for Lightning Web Components to use.
What is the correct definition of a Lightning Web Component property that uses the getAccounts method?
A. 
B. 
C. 
D. 
Question 4
What is an example of a polymorphic lookup field in Salesforce?
A. The Whatld field on the standard Event object
B. A custom field, Link__c, on the standard Contact object that looks up to an Account or a Campaign
C. The Parentid field on the standard Account object
D. The LeadId and Contactid fields on the standard Campaign Member object
Question 5
A developer identifies the following triggers on the Expense _c object:
The triggers process before delete, before insert, and before update events respectively.
Which two techniques should the developer implement to ensure trigger best practices are followed?
Choose 2 answers
A. Unity all three triggers In a single trigger on the Expense__c object that Includes all events.
B. Create helper classes to execute the appropriate logic when a record is saved.
C. Maintain all three triggers on the Expense __c object, but move the Apex logic out of the trigger definition.
D. Unify the before insert and before update triggers and use Flow for the delete action.
Solutions:
| Question 1 Answer: C | Question 2 Answer: A,D | Question 3 Answer: D | Question 4 Answer: A | Question 5 Answer: A,B |
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