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Introduction to SQL

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

Nothing
Hi
FLASE
TRUE

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Introduction to SQL
A dynamic view is one whose contents materialize when referenced.

True
False

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Introduction to SQL
In SQL, which of the following is not a data definition language commands?

GRANT
UPDATE
REVOKE
RENAME

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Introduction to SQL
The Microsoft Access wildcards are ____ and ____ .

asterisk (*); percent sign (%)
percent sign (%); underscore (_)
underscore(_); question mark (?)
question mark (?); asterisk (*)

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Introduction to SQL
Which of the following is valid SQL for an Index?

REMOVE INDEX ID;
ADD INDEX ID;
CREATE INDEX ID;
CHANGE INDEX ID;

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