How can a developer ensure test classes remain reliable when schema changes are made?

By disabling validation rules in test classes

By using Test.setMock to simulate schema changes

By updating test data creation to include new required fields

By avoiding the use of hard-coded field names in test data

A developer adds a new required field to an object that is used in test data creation. What is the impact on existing test classes?

Test classes that create records without the new field will fail.

Test classes will automatically populate the field with a default value.

Test classes will be skipped during test execution.

Test classes will continue to work because test data is exempt from validation.

A developer is designing a data model for a large org. The model includes a custom object that has a lookup relationship to Account. The developer needs to write an Apex method that retrieves all records of the custom object for a given Account. The org has millions of records of the custom object. Which schema design choice would MOST improve the performance of this query?

Use a formula field to store the Account ID

Add an index on the lookup field

Change the lookup relationship to a master-detail relationship

Create a rollup summary field on Account to count the related records

How does relationship cardinality (e.g., one-to-many vs. many-to-many) affect SOQL queries?

It affects the number of records returned and the potential for query limits.

It has no impact on SOQL queries.

It only affects the fields that can be selected.

It only affects the order of results.

A developer is deploying a new Apex class that references a custom field that exists in the sandbox but not in production. What is the MOST likely outcome of the deployment?

The deployment fails because the field does not exist in the target environment

The deployment succeeds, but the class is inactive until the field is added

The deployment succeeds, but the field is ignored at runtime

The deployment succeeds, and the field is automatically created in production

SalesforceCertified Platform Developer I

Domain 2Objective 3

Describe the Impact of Schema Design and Modifications on Apex Development. PLATFORM-DEVELOPER-I Practice Questions (Page 1)

Part of the DATA MODELING AND MANAGEMENT domain, which accounts for 10% of the PLATFORM-DEVELOPER-I exam.

16questions here

4free pages

6concepts

10%of the exam

Questions 1–5

1foundation · easy
How can a developer ensure test classes remain reliable when schema changes are made?
Select an answer first
2foundation · easy
A developer adds a new required field to an object that is used in test data creation. What is the impact on existing test classes?
Select an answer first
3expert · hard
A developer is designing a data model for a large org. The model includes a custom object that has a lookup relationship to Account. The developer needs to write an Apex method that retrieves all records of the custom object for a given Account. The org has millions of records of the custom object. Which schema design choice would MOST improve the performance of this query?
Select an answer first
4foundation · easy
How does relationship cardinality (e.g., one-to-many vs. many-to-many) affect SOQL queries?
Select an answer first
5application · medium
A developer is deploying a new Apex class that references a custom field that exists in the sandbox but not in production. What is the MOST likely outcome of the deployment?
Select an answer first

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