SQL
Quiz
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Computers
•
Professional Development
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Practice Problem
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Medium
Nguyễn Duy
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30 questions
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1.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Trong số các database sau, cái nào là CSDL quan hệ ?
Redis
MongoDB
PostgreSQL
CouchDB
MySQL
2.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Câu lệnh SELECT dùng để:
Xóa dữ liệu
Thêm dữ liệu
Reset database
Chỉnh sửa dữ liệu
Đọc dữ liệu
3.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Sử dụng câu lệnh nào để lọc dữ liệu:
WHERE
IF ELSE
INSERT
FROM
FILTER
4.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Trong CSDL quan hệ, dữ liệu được lưu trữ dưới dạng:
Text file
Bảng
Key-Value
Document
JSON object
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
SQL là viết tắt của
Superman Quality League
Strong Query Language
Structured Query Language
Strict Query Language
Standard Query Language
6.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Câu nào dưới đây không đúng khi nói về ORDER BY
ORDER BY dùng để sắp xếp dữ liệu trả về từ lệnh SELECT
ORDER BY có thể sắp xếp theo chiều giảm dần bằng từ khóa ASC
Khi sử dụng ORDER BY có thể không cần viết chiều sắp xếp
ORDER BY có thể sắp xếp theo nhiều cột
7.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
MySQL chạy ở cổng mặc định nào
27017
5432
3306
22
8000
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