Câu 48: Databricks Certified Data Engineer Professional
A data engineer is configuring a pipeline that will potentially see late-arriving, duplicate records. In addition to de-duplicating records within the batch, which of the following approaches allows the data engineer to deduplicate data against previously processed records as it is inserted into a Delta table?
Nội dung câu hỏi
A data engineer is configuring a pipeline that will potentially see late-arriving, duplicate records. In addition to de-duplicating records within the batch, which of the following approaches allows the data engineer to deduplicate data against previously processed records as it is inserted into a Delta table?
Các lựa chọn
Đáp án được giữ gọn theo nhãn A, B, C, D trong phần bình chọn tương tác.
- A. Set the configuration delta.deduplicate = true.
- B. VACUUM the Delta table after each batch completes.
- C. Perform an insert-only merge with a matching condition on a unique key. — đáp án hiện tại
- D. Perform a full outer join on a unique key and overwrite existing data.
- E. Rely on Delta Lake schema enforcement to prevent duplicate records.
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