資料結構data structure
Quiz
•
Computers
•
University
•
Practice Problem
•
Hard
伯謙 張
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5 questions
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1.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
請問上次Flourish網站上bar running race所使用的資料集是屬於那一種表格?
長表格
寬表格
多維表格
客製化表格
2.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
轉換長表格和寬表格的方式是?
Pivot/Unpivot
Column/Row
Dimension/Measure
Join/Union
3.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
以下那一個不屬於資料類型?
字串(text)
日期/時間
影像
布林值T/F
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
將不同的資料表透過鍵值(key)串連在一起的方式稱為?
離群值(Outlier)
彙總(Aggregation)
軸轉(Pivot)
正規化(normalization)
5.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
如果要取得兩個不同資料表中共同的資料,應選擇下列那一種Join方式?
Inner Join
Left Join
Right Join
Outer Join
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