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Oracle IN and EXISTS MCQs

Oracle IN and EXISTS MCQs: This section contains multiple-choice questions and answers on IN and EXISTS in Oracle.
Submitted by Anushree Goswami, on June 27, 2022

1. When inserting, updating, and deleting statements in Oracle, the ____ clause is used.

1. Where
2. Exists
3. Order by
4. Group by

Answer: B) Exists

Explanation:

When inserting, updating, and deleting statements in Oracle, the Exists clause is used.

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2. A subquery is created by ____ the queries using the exists clause.

1. Distributing
2. Combining
3. Spreading
4. None

Answer: B) Combining

Explanation:

A subquery is created by combining the queries using the exists clause.

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3. What is the syntax of Oracle EXISTS?

1. Exists exists (subquery)
2. Exists where (subquery)
3. Where where (subquery)
4. Where exists (subquery)

Answer: D) Where exists (subquery)

Explanation:

The syntax of Oracle EXISTS is: "Where exists (subquery)".

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4. What is the parameter in the syntax of Oracle EXISTS?

1. Query
2. Subquery
3. Superquery
4. None

Answer: B) Subquery

Explanation:

The parameter in the syntax of Oracle EXISTS is subquery.

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5. Subqueries return at least ___ record set as a result of a select statement.

1. One
2. Two
3. Three
4. Four

Answer: A) One

Explanation:

Subqueries return at least one record set as a result of a select statement.

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6. A SELECT, INSERT, UPDATE, or DELETE statement with an ____ clause allows Oracle to reduce the need for multiple OR conditions.

1. IN
2. OUT
3. IN OUT
4. None

Answer: A) IN

Explanation:

A SELECT, INSERT, UPDATE, or DELETE statement with an In clause allows Oracle to reduce the need for multiple OR conditions.

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7. What is the syntax of Oracle IN?

1. IN expressions IN (value1, value2,.... value n)
2. IN expressions (value1, value2,.... value n)
3. expressions IN (value1, value2,.... value n)
4. expressions IN OUT (value1, value2,.... value n)

Answer: C) expressions IN (value1, value2,.... value n)

Explanation:

Syntax of Oracle IN is,

expressions IN (value1, value2,.... value n)

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8. What is the parameter in the syntax of Oracle IN?

1. Expressions
2. Where
3. Condition
4. None

Answer: A) Expressions

Explanation:

The parameter in the syntax of Oracle IN is "expressions".

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9. What is an expression parameter in the syntax of Oracle IN?

1. The expression column is used to get rows
2. The expression column is used to get tables
3. The expression column is used to get databases
4. The expression column is used to get values

Answer: D) The expression column is used to get values

Explanation:

The expression column is used to get values in the syntax of Oracle IN.

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10. How many values can there be in Oracle IN syntax?

1. 1
2. 2
3. 5
4. n

Answer: D) n

Explanation:

There could be n number of values in the syntax of Oracle IN.

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