Question

Choosing specific columns to be displayed by a Select statement is known as projection.

A) True
B) False

Answer 1

The statement that choosing specific columns to be displayed by a Select statement is known as projection is true. Projection in databases refers to selecting particular columns from a table using the SELECT SQL statement.

Step-by-step explanation:

Choosing specific columns to be displayed by a Select statement is known as projection. This statement is indeed true. The concept of projection in database management refers to creating a subtable that contains only specified columns from a larger table. In SQL, when we use the SELECT statement, we can specify the columns that we want to retrieve from a database table, instead of retrieving all the columns with *. For instance, if we have a table called 'Customer' and we only want to display the 'Name' and 'Email' columns, our SELECT statement would look like this:

SELECT Name, Email FROM Customer;

This query illustrates the process of projection, where only specific columns are being selected for display in the results. It is a fundamental aspect of the Structured Query Language (SQL) used in databases.