問題文
An architect is planning a customer-data migration and integration for a retailer. Which two practices most directly reduce the risk of the same person becoming duplicated across products? (Select two.)
選択肢
- Skip identity resolution to shorten the project timeline.
- Use the email address as the immutable primary key across every product.
- Load transactional records first and let each product mint a fresh customer identity per record, planning to reconcile all of the resulting duplicates manually at some unspecified point after go-live.
- Resolve and de-duplicate customer identity before loading transactional records that reference customers.
- Establish a shared, stable identifier for the customer that products can match on, rather than relying on a value that changes such as an email address.