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The DEX-450 certification exam is a challenging exam that requires a thorough understanding of programmatic development concepts and principles. Candidates must be able to demonstrate their ability to write efficient code, develop custom applications, and troubleshoot issues in a timely and effective manner. Programmatic Development using Apex and Visualforce in Lightning Experience certification exam is designed to test candidates on their ability to apply their knowledge to real-world scenarios, ensuring that certified developers are well-equipped to design and develop custom applications on the Salesforce platform.

The DEX-450 Certification Exam is a valuable credential for Salesforce developers who want to showcase their expertise in programmatic development on the platform. It is a challenging exam that requires a deep understanding of Apex and Visualforce, as well as the ability to apply that knowledge to real-world scenarios. By earning this certification, developers can demonstrate their ability to create custom applications that meet the unique needs of their organization, making them a valuable asset to any team.

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Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q69-Q74):

NEW QUESTION # 69
A developer is creating a test coverage for a class and needs to insert records to validate functionality. Which method annotation should be used to create records for every method in the test class?

A. @PreTest
B. @isTest(SeeAllData=True)
C. @BeforeTest
D. @TestSetup

Answer: D

NEW QUESTION # 70
What is a correct pattern to follow when programming in Apex on a Multi-tenant platform?

A. Queries select the fewest fields and records possible to avoid exceeding governor limits.
B. Apex classes use the ''with sharing" keyword to prevent access from other server tenants.
C. DML is performed on one record at a time to avoid possible data concurrency issues.
D. Apex code is created in a separate environment from schema to reduce deployment errors.

Answer: A

NEW QUESTION # 71
Universal Containers stores the availability date on each Line Item of an Order and Orders are only shipped when all of the Line Items are avaible. Which method should be used to calculate the estimated ship date for an Order?

A. Use a Max Roll-Up Summary field on the Latest availability date fields.
B. Use a LATEST formula on each of the latest availability date fields.
C. Use a DAYS formula on each of the availability date fields and a COUNT Roll-Up Summary field on the Order.
D. Use a CEILING formula on each of the Latest availability date fields.

Answer: A

NEW QUESTION # 72
When the code executes, a DML exception is thrown.
How should a developer modify the code to ensure exceptions are handled gracefully?

A. Implement the upsert DML statement.
B. Remove null items from the list of Accounts.
C. Implement Change Data Capture.
D. Implement a try/catch block for the DML.

Answer: D

NEW QUESTION # 73
Given the code below:

What should a developer do to correct the code so that there is no chance of hitting a governor limit?

A. Add a WHERE clause to the first SELECT SOQL statement.
B. Rework the code and eliminate the for loop.
C. combine the two SELECT statements into a single SOQL statement.
D. Add a LIMIT clause to the first SELECT SOQL statement.

Answer: D

NEW QUESTION # 74
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