Computing. Programming. Web development. Graphic design. Networking.

Web development quizzes

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NULL is exactly the same as empty string.

SQL injection is a technique where malicious users inject SQL commands into an SQL statement, via website input.

This query is correct: SELECT * FROM employee WHERE age BETWEEN 20 AND 25;

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

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