SQL is a language used to manage databases. It allows users to define and manipulate the data and structure of a database using commands like SELECT, INSERT, UPDATE, DELETE. These commands can be combined with comparison operators like =, >, <, >=, <=, and <> to filter and retrieve data from one or more database tables.

1. SQL

3. PURPOSE OF DATABASE

14. = Equal to
> Greater than
< Less than
>= Greater than
and equal to
<= Less than and
equal to
<> Not equal to