Web development quizzes

This query is correct: SELECT * FROM employee ORDER BY age DESC;
False
True

This query is correct: SELECT * FROM employee WHERE EITHER age = 25 OR age = 30;
False
True

A primary key column can contain NULL values.
False
True

RDBMS stands for "Reunified Database Management System".
False
True

LEFT JOIN returns all rows when there is at least one match in BOTH tables
False
True