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Introduction to SQL

Introduction to SQL
In SQL, which command(s) is(are) used to change a table's storage characteristics?

CHANGE TABLE
All of these
ALTER TABLE
MODIFY TABLE

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Introduction to SQL
Which of the following join is also called as an 'inner-join'?

None of these
Non-Equijoin
Equijoin
Self-Join

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Introduction to SQL
Table Employee has 10 records. It has a non-NULL SALARY column which is also UNIQUE.The SQL statementSELECT COUNT(*) FROM Employee WHERE SALARY > ANY (SELECT SALARY FROM EMPLOYEE);prints

0
10
5
9

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

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

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Introduction to SQL
SQL is a data sublanguage.

False
True

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