Change in Grid Value

Hi,

I have a grid like this and when I change city value of Mike NJ to LA, this change should reflect to Danny City too. Changing similar values should reflect all over the grid which has very similar values. Any suggestions pls?
 

EmpID	Name	Designation	City
1	Mike	Leader	NJ
2	Ryan	Team Member	Ames
3	Danny	Manager	NJ