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Introduction to SQL

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

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

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Introduction to SQL
The SQL WHERE clause:

Neither A nor B are correct.
limits the column data that are returned.
Both A and B are correct.
limits the row data are returned.

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Introduction to SQL
The SQL statement: SELECT Number1 + Number 2 AS Total FROM NUMBER_TABLE; adds two numbers from each row together and lists the results in a column named Total.

True
False

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

DELETE
TRUNCATE
COMMIT
ROLLBACK

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Introduction to SQL
SQL is a programming language.

True
False

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Introduction to SQL
The SQL keyword GROUP BY instructs the DBMS to group together those rows that have the same value in a column.

False
True

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