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Introduction to SQL

Introduction to SQL
If you are going to use a combination of three or more AND and OR conditions, it is often easier to use the NOT and NOT IN operators.

False
True

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Introduction to SQL
Which of the following command makes the updates performed by the transaction permanent in the database?

ROLLBACK
COMMIT
TRUNCATE
DELETE

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Introduction to SQL
What is the full form of SQL?

Structured Query List
Simple Query Language
None of these
Structured Query Language

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Introduction to SQL
SQL is:

a data sublanguage.
a DBMS.
a programming language.
an operating system.

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Introduction to SQL
Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value.

True
False

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Introduction to SQL
Find all the cities whose humidity is 89

SELECT city WHERE humidity = 89;
SELECT humidity = 89 FROM weather;
SELECT city FROM weather WHERE humidity = 89;
SELECT city FROM weather;

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