Informàtica. Programació. Desenvolupament web. Disseny gràfic. Xarxes.

Quizzes de desenvolupament web

RDBMS stands for "Reunified Database Management System".

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

This query is correct: INSERT INTO table_name THIS (value1,value2,value3,...);

This query retrieves the employees whose names end with h: SELECT * FROM employees WHERE name LIKE 'h%';

NULL is exactly the same as empty string.