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Introduction to SQL

Introduction to SQL
Which of the following command makes the updates performed by the transaction permanent in the database?

ROLLBACK
DELETE
TRUNCATE
COMMIT

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Introduction to SQL
When three or more AND and OR conditions are combined, it is easier to use the SQL keyword(s):

LIKE only.
NOT IN only.
IN only.
Both IN and NOT IN.

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

False
True

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

Microsoft Access
DBase
Oracle
SQL

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

Primary keys
All of these
Data types
Default values

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Introduction to SQL
............. joins two or more tables based on a specified column value not equaling a specified column value in another table.

EQUIJOIN
NATURAL JOIN
NON-EQUIJOIN
OUTER JOIN

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