Explore topic-wise MCQs in Introduction to SQL.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Introduction to SQL knowledge and support exam preparation. Choose a topic below to get started.

Explore topic-wise MCQs in Introduction to SQL.

Delete from r; r relation This command performs which of the following action ?

To remove a relation from an SQL database, we use the ______ command.

An attribute A of datatype varchar(20) has the value Avi . The attribute B of datatype char(20) has value Reed .Here attribute A has spaces and attribute B has spaces .

The basic data type char(n) is a _ length character string and varchar(n) is _ length character.

Select * from employee What type of statement is this?

Create table employee (name varchar ,id integer) What type of statement is this ?

Which one of the following provides the ability to query information from the database and to insert tuples into, delete tuples from, and modify tuples in the database ?

To establish a range of values, < and> can be used.

Which one of the following is used to define the structure of the relation ,deleting relations and relating schemas ?

Explore topic-wise MCQs in Introduction to SQL.

Delete from r; r relation This command performs which of the following action ?

To remove a relation from an SQL database, we use the ______ command.

An attribute A of datatype varchar(20) has the value Avi . The attribute B of datatype char(20) has value Reed .Here attribute A has ____ spaces and attribute B has ____ spaces .

The basic data type char(n) is a _____ length character string and varchar(n) is _____ length character.

Select * from employee What type of statement is this?

Create table employee (name varchar ,id integer) What type of statement is this ?

Which one of the following provides the ability to query information from the database and to insert tuples into, delete tuples from, and modify tuples in the database ?

To establish a range of values, &lt; and&gt; can be used.

Which one of the following is used to define the structure of the relation ,deleting relations and relating schemas ?

An attribute A of datatype varchar(20) has the value Avi . The attribute B of datatype char(20) has value Reed .Here attribute A has spaces and attribute B has spaces .

The basic data type char(n) is a _ length character string and varchar(n) is _ length character.

To establish a range of values, < and> can be used.