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Introduction to SQL

Introduction to SQL
Which of the following SQL commands is used to retrieve data?

JOIN
DELETE
SELECT
INSERT

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Introduction to SQL
What is the full form of SQL?

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

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Introduction to SQL
A subquery in an SQL SELECT statement:

can always be duplicated by a join.
can only be used with two tables.
has a distinct form that cannot be duplicated by a join.
cannot have its results sorted using ORDER BY.

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Introduction to SQL
Microsoft Access has become ubiquitous, and being able to program in Access is a critical skill.

True
False

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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.

True
False

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Introduction to SQL
SQL query and modification commands make up a(n) ________ .

DDL
HTML
XML
DML

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