Bind a gridview through Multiple dataset's table in asp.net

Hi friends,

I have a grid view in my page..
And in database i have 3 tables for this Gridview.
Then i had use Dataset ..But How can i bind a gridview through Multiple dataset's table. ?

Suppose I have 3 Query :
i) Select Name from tblEmployee
ii) Select Dept from tblDept
iii) select salary from tblsalary

There is no any relation in all these Tables.
Now i want to Bind these all tables into A Single Grid View.....

please give the solution.

thanks.