1. Write a query to display all the columns of employees table.

2. Write a query to display first name, last name and their salary of employees where column headings will be specified as aliases: FirstName, LastName and Salary

3. Write a query to list the employees who are joined in the year between '01-Jan-2004' and '31-Dec-2008'

4. Write a query to list first name, last name and their salary for first 10 employees contained in the employees table.

5. Write a query statement to display first name, last name, their city and country names, region names, their job starting date, and their job titles, and, display the query result as well