How to update data in one table from corresponding data in another table in SQL Server 2005

Question

I have two tables in different databases on the same database server.

Both the databases have the same structure, but different data. Database1 (Test1) is the latest

Answer 1

 UPDATE Employee SET Empid=emp3.empid 
 FROM EMP_Employee AS emp3
 WHERE Employee.Empid=emp3.empid