what is database the tool also allows us to populate data into the tablethis is done by entering data into grid and hitting apply as shown below sql and databases we can now use query languages to identify and return data held in the database often using specific criteria for examplelet us say we want to return all the people who have the surname jones from the following tablewe can do this by specifying that data should be returned where the surname equals 'jones'in sql this would look likeselect from students where surname='jones'the above select statement states that all the properties (columns or attributesin row in the table students are to be returned where the surname equals 'jonesthe result is that two rows are returnednote we need to specify the table we are interested in and what data we want to return (the '*after the select indicated we want all the dataif we were only interested in their first names then we could useselect name from students where surname='jones'