Câu 19: DP-800: Developing AI-Enabled Database Solutions
You have an Azure SQL database that contains a table named Rooms. Rooms was created by using the following Transact-SQL statement. You discover that some records in the Rooms table contain NULL values for the Owner field. You need to ensure that all future records have a value for the Owner field. What should you add?
Nội dung câu hỏi
You have an Azure SQL database that contains a table named Rooms. Rooms was created by using the following Transact-SQL statement. You discover that some records in the Rooms table contain NULL values for the Owner field. You need to ensure that all future records have a value for the Owner field. What should you add?
Các lựa chọn
Đáp án được giữ gọn theo nhãn A, B, C, D trong phần bình chọn tương tác.
- A. a foreign key
- B. a check constraint — đáp án hiện tại
- C. a nonclustered index
- D. a unique constraint
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