Trắc nghiệm tin 12B4
Quiz
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Other
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12th Grade
•
Practice Problem
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Medium
10:Trần Nhật Duy 12B4
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43 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Mô hình phổ biến để xây dựng CSDL quan hệ là:
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2: Các khái niệm dùng để mô tả các yếu tố nào sẽ tạo thành mô hình dữ liệu quan hệ?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Mô hình dữ liệu quan hệ được E. F. Codd đề xuất năm nào?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4: Trong mô hình quan hệ, về mặt cấu trúc thì dữ liệu được thể hiện trong các:
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5: Thao tác trên dữ liệu có thể là:
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 6: Phát biểu nào về hệ QTCSDL quan hệ là đúng?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7: Thuật ngữ “quan hệ” dùng trong hệ CSDL quan hệ là để chỉ đối tượng:
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