Câu 2: Databricks Certified Data Engineer Professional
A table is registered with the following code: Both users and orders are Delta Lake tables. Which statement describes the results of querying recent_orders?
Nội dung câu hỏi
A table is registered with the following code: Both users and orders are Delta Lake tables. Which statement describes the results of querying recent_orders?
Các lựa chọn
Đáp án được giữ gọn theo nhãn A, B, C, D trong phần bình chọn tương tác.
- A. All logic will execute at query time and return the result of joining the valid versions of the source tables at the time the query finishes.
- B. All logic will execute when the table is defined and store the result of joining tables to the DBFS; this stored data will be returned when the table is queried. — đáp án hiện tại
- C. Results will be computed and cached when the table is defined; these cached results will incrementally update as new records are inserted into source tables.
- D. All logic will execute at query time and return the result of joining the valid versions of the source tables at the time the query began.
- E. The versions of each source table will be stored in the table transaction log; query results will be saved to DBFS with each query.
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