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Introduction to SQL

Introduction to SQL
Most companies keep at least two versions of any database they are using.

True
False

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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.

True
False

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Introduction to SQL
________ was adopted as a national standard by ANSI in 1992.

SQL
Oracle
Microsoft Access
DBase

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Introduction to SQL
Which of the following is a valid SQL type?

FLOAT
All of these
CHARACTER
NUMERIC

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Introduction to SQL
Let the statementSELECT column1 FROM myTable;return 10 rows. The statementSELECT ALL column1 FROM myTable;will return

None of these
exactly 10 rows
more than 10 rows
less than 10 rows

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Introduction to SQL
To remove duplicate rows from the results of an SQL SELECT statement, the ________ qualifier specified must be included.

DISTINCT
UNIQUE
ONLY
SINGLE

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