Desarrollo con PHP y Java. Diseño gráfico con GIMP e Inkscape.

Quizzes de desarrollo web

This query is correct: ERASE FROM table_name WHERE column1=value1;

We can define aliases like this: SELECT age ALIAS myage FROM employee;

NULL is exactly the same as empty string.

UNIQUE and NOT NULL are contraints.

This query is correct: UPDATE table_name SET column1=value1;