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yKpoI14uk [10]
3 years ago
7

You need to extract data from the system your predecessor created. you discover tables have been created according to the third

normal form. you find the needed data in three different tables. what SQL syntax allows you to garner this data?
a. union
b. join
c. Select
d. Having

Computers and Technology
1 answer:
MissTica3 years ago
4 0

Answer:

b. join

Explanation:

Correct answer:

Join: It allow join(paste) two tables by one or more commun columns

Example in the image attached

Bad answer:

Union: it only allow paste two tables with the same structure

select: it only allow get information from 1 table if not use join

having: it only allow get filtered information with a condition

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