Web development quizzes

Querying directly from a table takes more time than querying from a view.
False
True

MySQL is (as of March 2014) the world's second most widely used open-source RDBMS.
False
True

This query is correct: SELECT * FROM employee WHERE age IN (20,21,22);
False
True

A primary key column can contain NULL values.
False
True

This statement adds a column: ALTER TABLE employee DROP COLUMN age.
False
True