
CSDL
Authored by HAPPY Bird
Computers
University
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17 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Câu nào trong các câu dưới đây sai khi nói về hệ CSDL khách-chủ?
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Hai bảng trong một CSDL quan hệ liên kết với nhau thông qua
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tiêu chí nào sau đây thường được dùng để chọn khóa chính?
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Thế nào là cơ sở dữ liệu quan hệ?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gỉa sử bảng Employee có 8 dòng dữ liệu. Hãy cho biết kết quả lệnh truy vấn sau có bao nhiêu dòng? SELECT e1.name, e2.name FROM employee e1, employee e2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cho câu truy vấn sau: SELECT E.EMPLOYEE_NAME, P.PAYSCALE FROM EMPLOYEES E WHERE 500>ALL(SELECT P.BONUSPAY FROM PAYLIST P WHERE P.EMPLOYEEID = E.EMPLOYEE_ID);
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Hệ quản trị CSDL là gì?
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