Explore topic-wise MCQs in Structured Query Language (SQL).

This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Structured Query Language (SQL) knowledge and support exam preparation. Choose a topic below to get started.

1.

WHICH_AMONG_THE_FOLLOWING_IS_THE_CORRECT_SYNTAX_FOR_MODIFYING_THE_DEFINITION_OF_AN_EXISTING_TABLE??$

A. ALTER TABLE person MODIFY person_id SMALLINT UNSIGNED AUTO_INCREMENT;
B. ALTER TABLE person person_id SMALLINT UNSIGNED AUTO_INCREMENT;
C. ALTER TABLE person MODIFY person_id ;
D. ALTER TABLE person
Answer» C. ALTER TABLE person MODIFY person_id ;
Discussion
2.

Which feature is used for automatic increment of the column?

A. AUTO_INCREMENT
B. AUTO
C. INCREMENT
D. All of the mentioned
Answer» B. AUTO
Discussion
3.

Which statement can be used for modifying the definition for an existing table?

A. ALTER
B. Modified
C. SELECT
D. FROM
Answer» B. Modified
Discussion
4.

Normal attribute of the table

A. Super key
B. Composite key
C. Primary key
Answer» B. Composite key
Discussion
5.

Composite attributes

A. Multivalued attributes
B. Table name
C. None of the mentioned
Answer» C. None of the mentioned
Discussion
6.

Is it necessary to insert the value in each column of the table?

A. Yes
B. No
C. Depends on the server
D. Depends on the usage of the table
Answer» C. Depends on the server
Discussion
7.

Which Statement is used to insert the values in the table?

A. INSERT INTO
B. Insert
C. INSERT
D. None of the mentioned
Answer» B. Insert
Discussion