Câu 6: DQ: Data Quality
The monthly release of operational software changed the database, removing a column that was no longer required. The data warehouse failed for three weeks. What was missing from the change process?
Nội dung câu hỏi
The monthly release of operational software changed the database, removing a column that was no longer required. The data warehouse failed for three weeks. What was missing from the change process?
Các lựa chọn
Đáp án được giữ gọn theo nhãn A, B, C, D trong phần bình chọn tương tác.
- A. More signatures on the change form (e.g. the data warehouse manager)
- B. Robust warehouse design that was designed around meaningless column in the operational system
- C. Star schema compliance that would not cause this failure in the data warehouse
- D. The deleted column
- E. Impact analysis that tracked the data value chain to the end — đáp án hiện tại
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