Test: Structured Query Language - 1 - CUET Humanities MCQ

A DBMS query language is used to design and define database structure, help to make and program various complex application software, and assist the end users with language commands.

Yes, this function is used to return the number of values from the column that matches the specified criteria.

Both the statements are false because the unique key allows null value, but the primary key does not allow null value and the value of foreign key column may be repetitive.

Create and Alter are the Data Definition Language (DDL) commands. DDL refers to the set of SQL commands that can create and manipulate the structure of a database. They can create, change and remove objects.

Both option 1 and option 2 can be used. But VARCHAR2 is a better fit compared to CHAR.

Option 4 is correct because SQL DML includes a query language based on relational algebra and tuple relational calculus.

Structured query language (SQL) is used to retrieve data from a database.

toLowerCase(); is the correct method.

All the above options are limitations of aggregate function. Hence, option 4 is the required answer.

INTERSECTION selects the common tuples from two relations.