Describe the Use Cases for and Benefits of External IDs. PLATFORM-DEVELOPER-II Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   In which scenario is an external ID most commonly used?

   • ATo store the email address of a contact for marketing campaigns.
   • BTo store a formatted address for mailing labels.
   • CTo store the Salesforce record ID for reference in an external system.
   • DTo store a unique customer number from a legacy ERP system so that records can be matched during data migration.
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A company is integrating its CRM with an external support system. Each support ticket has a unique ticket number. The integration needs to update existing tickets in Salesforce and create new ones when tickets are created in the support system. What should the integration use to map the ticket number to the correct Salesforce record?

   • AA lookup field on the Ticket object that points to the support system.
   • BThe ticket subject field, assuming subjects are unique.
   • CAn external ID field on the Ticket object that stores the ticket number.
   • DThe Salesforce record ID of the ticket.
   Reveal Solution Discussion Select an answer first
4. 18application · medium

   A Salesforce admin is designing a custom object to store data from an external HR system. The HR system provides a unique employee ID for each employee. The admin needs to ensure that the employee ID field can be used as a matching key in data integration and that no two records can have the same employee ID. What should the admin do?

   • ACreate a custom lookup field to the Employee object and mark it as an external ID.
   • BCreate a custom number field, check the 'External ID' checkbox, and leave the 'Unique' checkbox unchecked.
   • CCreate a custom formula field that returns the employee ID and mark it as an external ID.
   • DCreate a custom text field, check the 'External ID' and 'Unique' checkboxes, and set the field to case-sensitive.
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   A company is migrating its customer records from a legacy CRM to Salesforce. Each customer in the legacy system has a unique alphanumeric identifier. The migration team needs to import the records and then, on an ongoing basis, update those same records from the legacy system without creating duplicates. What should the Salesforce administrator configure to support this requirement?

   • ACreate a custom text field on the Account object, mark it as an external ID, and use it as the matching key during import and subsequent updates.
   • BUse the standard Account Name field as the matching key during import and updates.
   • CCreate a custom lookup field to the legacy system and use it to relate records.
   • DCreate a custom formula field on the Account object that concatenates the legacy identifier with the record name, and use it for matching.
   Reveal Solution Discussion Select an answer first
6. 20foundation · easy

   What happens when an upsert operation is performed using an external ID and no matching record is found?

   • AThe external ID is ignored and the record is created without it.
   • BThe operation updates the first record in the object.
   • CA new record is inserted with the external ID value.
   • DThe operation fails with an error.
   Reveal Solution Discussion Select an answer first