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Introduction to SQL

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

All of these
Data Integrity
Materialized Views
Normalization

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Introduction to SQL
The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions or ad hoc queries.

False
True

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Introduction to SQL
There is an equivalent join expression that can be substituted for all subquery expressions.

True
False

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Introduction to SQL
Scalar aggregate are multiple values returned from an SQL query that includes an aggregate function.

True
False

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Introduction to SQL
The SQL statementSELECT ROUND(45.926, -1) FROM DUAL;

prints garbage
prints 50
is illegal
prints 045.926

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Introduction to SQL
Which of the following do you need to consider when you make a table in SQL?

Default values
All of these
Primary keys
Data types

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