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Question 40/86
Universal Containers has a large volume of Contact data going into Salesforce.com. There are 100,000 existing contact records. 200,000 new contacts will be loaded. The Contact object has an external ID field that is unique and must be populated for all existing records. What should the architect recommend to reduce data load processing time?
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D. Load all records via the Upsert operation (Option D): Using the Upsert operation with the external ID field allows you to determine whether a record is new or already exists based on the external ID. This method reduces processing time by handling both new and existing records in a single operation.
Options A (Insert and Update operations) would require two separate operations, potentially increasing the overall processing time and complexity.
Option B (Streaming API via Upsert) might not be necessary for this scenario unless real-time streaming is a specific requirement.
Option C (Delete existing records and load all via Insert) involves unnecessary data deletion and reinsertion, which can be less efficient than the Upsert operation in this context.