Web development quizzes

A primary key column can contain NULL values.
False
True

The DEFAULT constraint inserts a default value into a column.
False
True

This query returns all the columns from the table Employee: SELECT + FROM Employee
False
True

We use the DIFFERENT keyword to retrieve different values, for example: SELECT DIFFERENT column_name FROM table_name;
False
True

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