
ELE A 數據庫 CH01
Quiz
•
Computers
•
10th - 12th Grade
•
Practice Problem
•
Hard
Ming Pui
Used 2+ times
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在數據庫軟件內建構數據庫表時,用戶通常應設定什麼? (DSE2021 Q4)
(1)每個欄的數據類型
(2)最多的記錄數目
(3)主關鍵碼
(1)、(2)和(3)
只有(2)和(3)
只有(1)和(2)
只有(1)和(3)
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在數據庫軟件內,使用表格來輸入數據的主要優點是什麼?(DSE 2021 Q11)
(1)減少輸入錯誤。
(2)縮短SQL語句的執行時間。
(3)需要較少儲存空間。
只有(2)
只有(2)和(3)
只有(1)
只有(1)和(3)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某數據庫表 PET 內有6筆記錄如下:
以下的SQL語句的輸出會包括什麼數值?(DSE2020 Q11)
SELECT SUM(WEIGHT) FROM PET GROUP BY PTYPE
(1)109
(2)15
(3)34
(4)60
只有(3)和(4)
只有(2)、(3)和(4)
只有(1)
只有(2)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下是數據庫表 STUDENT
STUDENT 中的 SID 可能是什麼數據類型? (DSE2019 Q6)
(1)整數
(2)字符
(3)布爾
只有(2)
只有(1)
只有(1)和(3)
只有(2)和(3)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下是數據庫表 STUDENT
將STUDENT 匯出至試算表。哪項試算表功能可產生與在DBMS工具下執行下列SQL指令後的輸出相似? (DSE2019 Q7)
SELECT CLASS, COUNT(*) FROM STUDENT GROUP BY CLASS
排序
在公式內,使用儲存格參照
樞紐分析表
物件連接與嵌入(OLE)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
數據庫表PROD包含七筆記錄,如下展示:
執行下列SQL指令會輸出什麼? (DSE2018 Q2)
SELECT MAX(WEIGHT) FROM PROD WHERE PSTAT <> 'S'
11
1
5
6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在數據庫管理系統DBMS內,使用表格table的主要好處是什麼? (DSE 2017 Q10)
節省儲存空間
簡化列印報告
簡化輸入數據
在單一數據庫表篩選數據
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