
Cơ sở dữ liệu 18
Authored by dung vo
Other
11th Grade
Used 2+ times

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21 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 4 pts
Trong bảng banthuam, trường nào sau đây được sử dụng làm khóa chính?
tenBannhac
tenNhacsi
idBanthuam
tenCasi
2.
MULTIPLE CHOICE QUESTION
30 sec • 4 pts
Bảng nào sau đây không cần có trường idCasi?
casi
nhacsi và banthuam
banthuam
nhacsi
3.
MULTIPLE CHOICE QUESTION
30 sec • 4 pts
Trong bảng banthuam, trường idCasi là khóa ngoại tham chiếu đến bảng nào?
bannhac
nhacsi
casi
Banthuam
4.
MULTIPLE CHOICE QUESTION
30 sec • 4 pts
Trường nào trong bảng bannhac cần có kiểu dữ liệu VARCHAR(255)?
idNhacsi
tenBannhac
idBannhac
idCasi
5.
MULTIPLE CHOICE QUESTION
30 sec • 4 pts
Trường idBanthuam trong bảng banthuam có kiểu dữ liệu nào?
VARCHAR
DATE
INT
TEXT
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Bảng nào sau đây có trường idNhacsi làm khóa chính?
banthuam
casi
bannhac
nhacsi
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Trong bảng nhacsi, trường idNhacsi thuộc loại khóa gì?
Khóa chính
Khóa ngoại
Khóa cấm trùng lặp
Không phải khóa
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