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Introduction to SQL

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

Materialized Views
All of these
Normalization
Data Integrity

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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
Which of the following is a SQL aggregate function?

JOIN
LEN
AVG
LEFT

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Introduction to SQL
The benefits of a standard relational language include which of the following?

Reduced training costs
All of these
Increased dependence on a single vendor
Applications are not needed

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Introduction to SQL
The SELECT statement SELECT 'Hi' FROM DUAL WHERE NULL = NULL; Outputs

FLASE
TRUE
Hi
Nothing

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Introduction to SQL
Data manipulation language (DML) commands are used to define a database, including creating, altering, and dropping tables and establishing constraints.

False
True

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