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Introduction to SQL

Introduction to SQL
Which SQL statement is used to delete data FROM a database?

DELETE
COLLAPSE
REMOVE
ALTER

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Introduction to SQL
ON UPDATE CASCADE ensures which of the following?

Normalization
All of these
Materialized Views
Data Integrity

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Introduction to SQL
Indexes can usually be created for both primary and secondary keys.

True
False

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Introduction to SQL
Which SQL keyword is used to retrieve a maximum value?

UPPER
MAX
TOP
MOST

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Introduction to SQL
Indexes may be created or dropped at any time.

True
False

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Introduction to SQL
Which of the following is a SQL aggregate function?

LEFT
JOIN
LEN
AVG

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