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Web development quizzes

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

The HAVING statement must be used along with the GROUP BY statement.

The UPDATE statement is a data manipulation language (DML).

This query is correct: SELECT column1 FROM table1 UNION SELECT column2 FROM table2;

RDBMS stands for "Reunified Database Management System".