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Salesforce DEX-450 Exam Questions

Exam Name: Build Applications Programmatically on the Salesforce Platform
Exam Code: DEX-450
Related Certification(s): Salesforce Platform Developer I Certification
Certification Provider: Salesforce
Number of DEX-450 practice questions in our database: 200 (updated: Apr. 02, 2025)
Expected DEX-450 Exam Topics, as suggested by Salesforce :
  • Topic 1: Describe how triggers fit into and can be impacted by the Order of Execution/ Building a Data Model on the Salesforce Platform
  • Topic 2: Referencing Custom Controllers and Controller Extensions/ Use the sObject data type, the primitive data types, and basic control statements in Apex
  • Topic 3: Process the result of a query in Apex/ Understanding Record Types/ Use trigger context variables
  • Topic 4: Describe strategies for Testing Visualforce controllers/ Use SOQL to Query Parent-Child Relationships
  • Topic 5: Write a query that traverses a child-to-parent and parent-to-child relationship/ Creating Roll-Up Summary Fields
  • Topic 6: Write a basic query using Salesforce’s query language, SOQL/ Write Apex to invoke DML operations and handle DML errors
  • Topic 7: Write tests for action methods, getters, setters, and properties/ List the differences between the ways you can invoke DML operations
  • Topic 8: Describe the syntax of a trigger definition/ Display data from a record in a Visualforce page
  • Topic 9: Describe common limit issues and security concerns/ Launch a Visualforce page using a custom button
  • Topic 10: Visualforce Development Considerations and Testing/ Determine what data an Apex class can access
  • Topic 11: Describe the memory lifecycle for static attributes/ Use Platform Events for Immediate Error Logging
  • Topic 12: Describe practices for writing code that is easy to maintain and extend/ Write triggers and classes that assume batches of data as input
Disscuss Salesforce DEX-450 Topics, Questions or Ask Anything Related

Talia

26 days ago
Nailed the Salesforce exam! Pass4Success's practice questions were key to my success.
upvoted 0 times
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Marget

2 months ago
Just became Salesforce certified! Pass4Success made my study time so much more effective.
upvoted 0 times
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Amos

2 months ago
Passed the Salesforce exam, thanks to Pass4Success. There was a tricky question on Trigger Design Strategies. It asked how to use trigger frameworks to manage complex business logic. I had to think hard about it, but I passed.
upvoted 0 times
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Micheal

3 months ago
Salesforce certification achieved! Pass4Success's questions were incredibly similar to the actual exam.
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Arlette

4 months ago
Cleared the Salesforce exam, and Pass4Success practice questions were invaluable. One question that stumped me was about Apex Class Essentials. It asked how to use access modifiers to control visibility. I wasn't entirely sure, but I got through.
upvoted 0 times
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Reita

4 months ago
Passed my Salesforce exam with flying colors! Couldn't have done it without Pass4Success's relevant practice material.
upvoted 0 times
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Deane

4 months ago
I passed the Salesforce exam, and Pass4Success was a big help. A question that threw me off was about Visualforce Development Considerations. It asked how to optimize Visualforce pages for performance. I wasn't sure of the best practices, but I managed to pass.
upvoted 0 times
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Mary

5 months ago
Salesforce cert in the bag! Pass4Success's exam questions were a lifesaver for last-minute prep.
upvoted 0 times
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Tesha

5 months ago
Successfully passed the Salesforce exam, thanks to Pass4Success. One challenging question was about Apex Testing. It asked how to create test data and ensure 100% code coverage. I was a bit unsure, but I still passed.
upvoted 0 times
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Jamika

5 months ago
I aced the Salesforce exam, and Pass4Success practice questions were a lifesaver. There was a question about Lightning Components that puzzled me. It asked how to use Lightning Data Service to load, create, and edit records. I wasn't entirely confident, but I made it through.
upvoted 0 times
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Georgeanna

6 months ago
Passed the Salesforce exam with flying colors, and Pass4Success was instrumental. One question that caught me off guard was about declarative automation. It asked how to use Process Builder to automate a business process without writing code. I wasn't 100% sure, but I still managed to pass.
upvoted 0 times
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Tijuana

6 months ago
Wow, aced the Salesforce exam! Pass4Success really helped me prepare quickly and efficiently.
upvoted 0 times
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Edward

6 months ago
Just cleared the Salesforce exam, thanks to Pass4Success! There was a tricky question on Apex Transactions. It asked how to handle partial success in a transaction using savepoints and rollbacks. I had to think hard about it, but I got through.
upvoted 0 times
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Ailene

7 months ago
The exam tested knowledge of Apex Interfaces and virtual classes. Understand how to use them for creating flexible, extensible code.
upvoted 0 times
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Justine

7 months ago
I recently passed the Salesforce Build Applications Programmatically exam, and the Pass4Success practice questions were a huge help. One question that stumped me was about the order of execution in Salesforce. Specifically, it asked about the sequence of triggers, workflows, and validation rules. I wasn't entirely sure of the exact order, but I managed to pass the exam.
upvoted 0 times
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Annette

7 months ago
Just passed the Salesforce Certified: Build Applications Programmatically exam! Thanks Pass4Success for the spot-on practice questions!
upvoted 0 times
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Avery

7 months ago
Passing the Salesforce Build Applications Programmatically on the Salesforce Platform exam was a great achievement for me, and I attribute my success to the practice questions provided by Pass4Success. The exam covered important topics such as building a Data Model on the Salesforce Platform and using basic control statements in Apex. One question that I remember struggling with was related to using the sObject data type in Apex. Despite my uncertainty, I was able to pass the exam.
upvoted 0 times
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Katie

8 months ago
My exam experience was successful as I passed the Salesforce Build Applications Programmatically on the Salesforce Platform exam with the assistance of Pass4Success practice questions. The exam included topics like referencing Custom Controllers and Controller Extensions, as well as using the sObject data type and basic control statements in Apex. One question that I found challenging was about using primitive data types in Apex. Even though I had some doubts, I managed to pass the exam.
upvoted 0 times
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Nichelle

9 months ago
Just passed the Salesforce Certified: Build Applications Programmatically exam! Watch out for questions on Apex triggers and their execution context. Know when to use before/after triggers and understand governor limits. Thanks to Pass4Success for the spot-on practice questions that helped me prep quickly. Remember to study LWC lifecycle hooks and how to handle events in Lightning Web Components. Also, be ready for scenarios involving integration patterns and callouts to external systems. Good luck!
upvoted 0 times
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Corazon

9 months ago
Just passed the Salesforce Certified: Build Applications Programmatically exam! Be prepared for questions on Apex triggers and their execution context. Study the order of execution and how triggers interact with other automation tools. Thanks to Pass4Success for the spot-on practice questions that helped me prepare quickly!
upvoted 0 times
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Polly

9 months ago
I recently passed the Salesforce Build Applications Programmatically on the Salesforce Platform exam with the help of Pass4Success practice questions. The exam covered topics such as triggers and Order of Execution, as well as building a Data Model on the Salesforce Platform. One question that stood out to me was related to how triggers can be impacted by the Order of Execution. Despite being unsure of the answer, I was able to pass the exam.
upvoted 0 times
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Delsie

10 months ago
Alex Johnson
upvoted 0 times
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Free Salesforce DEX-450 Exam Actual Questions

Note: Premium Questions for DEX-450 were last updated On Apr. 02, 2025 (see below)

Question #1

Consider the following code snippet:

As part of the deployment cycle, a developer creates the following test class:

When the test class runs, the assertion fails.

Which change should the developer implement in the Apex test method to ensure the test method executes successfully?

Reveal Solution Hide Solution
Correct Answer: D

Question #2

A developer must implement a CheckPaymentProcessor class that provides check processing payment capabilities that adhere to what is defined for payments in the Payment Processor interface.

Which implementation is correct to use the PaymentProcessor interface class?

A)

B)

C)

D)

Reveal Solution Hide Solution
Correct Answer: C

Question #3

Universal Containers wants to assess the advantages of declarative development versus programmatic customization for specific use cases in its Salesforce implementation.

What are two characteristics of declarative development over programmatic customization?

Choose 2 answers

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Correct Answer: A, C

Question #4

A developer must write an Apex method that will be called from a Lightning component. The method may delete an Account stored in the accountRec variable.

Which method should a developer use to ensure only users that should be able to delete Accounts can successfully perform deletions?

Reveal Solution Hide Solution
Correct Answer: B

Question #5

The values 'High', 'Medium', and 'Low' are identified as common values for multiple picklists across different objects.

What is an approach a developer can take to streamline maintenance of the picklists and their values, while also restricting the values to the ones mentioned above?

Reveal Solution Hide Solution
Correct Answer: A


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