Accessing Another Database On The Same Server

Let's assume we have 2 databases db1 & db2

and we have a table named "MyTable" which is located in db2 database

in the db1 database I create a stored procedure by using following code:

<<

use db1

create procedure myproc

as begin

select * from db2.dbo.MyTable

end;

>>

this code does not execute successfuly and I face an error which says << invalid object db2.dbo.MyTable>>

and as you know we are not allowed to use USE database key word in stored procedures

I can's access a table which is located in another database, whithin a stored procedure which is located in different data base but on the same server

thanks