Describe the Impact of Schema Design and Modifications on Apex Development. PLATFORM-DEVELOPER-I Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   When deploying a schema change that adds a required field to an object, what must be included in the deployment to avoid breaking Apex code in the target environment?

   • AA new page layout that includes the field
   • BA new sharing rule for the object
   • CA new record type for the object
   • DUpdated Apex code that populates the new field
   Reveal Solution Discussion Select an answer first
2. 7application · medium

   A developer is writing an Apex trigger on the Account object that needs to query all Contacts related to the Account being processed. The org has a large number of Contacts per Account. Which schema design consideration is MOST important to avoid hitting SOQL query limits?

   • AUse a single relationship query (SELECT Id, (SELECT Id FROM Contacts) FROM Account WHERE Id IN :accountIds) outside the loop
   • BUse the Salesforce Object Search Language (SOSL) to retrieve Contacts
   • CAdd an external ID field to Contact to avoid querying entirely
   • DUse a relationship query (SELECT Id FROM Contacts) inside the trigger loop
   Reveal Solution Discussion Select an answer first
4. 8foundation · easy

   What is a common deployment consideration when removing a field from an object in a production environment?

   • AExisting data in the field will be preserved in a backup.
   • BApex code referencing the field will fail to compile after deployment.
   • CThe field will be automatically replaced with a similar field.
   • DThe deployment will succeed but the field will remain in the schema.
   Reveal Solution Discussion Select an answer first
5. 9expert · hard

   A developer is deploying a new Apex class that uses a SOQL query with a filter on a custom field. The field exists in the sandbox but not in production. The deployment package includes the field. After deployment, the query performance is poor in production. What is the MOST likely cause?

   • AThe field was created with a different data type in production
   • BThe query returns too many fields in the SELECT clause
   • CThe field is not indexed in production, and the query is not selective
   • DThe Apex class was compiled with an older version of the field
   Reveal Solution Discussion Select an answer first
6. 10application · medium

   A developer is writing a test class that creates a new Account and a related Contact. The schema is modified to make the Contact's LastName field required. How should the test class be updated to remain reliable?

   • ADelete the LastName field from the test class's schema definition
   • BUse System.debug to log the missing field and continue
   • CUse the @isTest(SeeAllData=true) annotation to access existing records
   • DPopulate the LastName field when creating the Contact record in the test
   Reveal Solution Discussion Select an answer first