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Introduction to SQL

Introduction to SQL
ON UPDATE CASCADE ensures which of the following?

Normalization
Data Integrity
Materialized Views
All of these

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Introduction to SQL
Which of the following is illegal?

SELECT SYSDATE - (SYSDATE + 2) FROM DUAL;
SELECT SYSDATE - (SYSDATE - 2) FROM DUAL;
None of these
SELECT SYSDATE - SYSDATE FROM DUAL;

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Introduction to SQL
SQL can be used to:

create database structures only.
modify database data only.
All of these
query database data only.

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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

5
9
0
10

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Introduction to SQL
Which operator performs pattern matching?

EXISTS operator
BETWEEN operator
None of these
LIKE operator

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Introduction to SQL
The keyword BETWEEN can be used in a WHERE clause to refer to a range of values.

True
False

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