Domain:

1) Centralized Administration.

2) Security of Data, User & Groups

3)Server & Clients Based

4)Windows 2000 & 2003 Server or Advance Support For Server Configuration

5)File, Folder & User & Group Permission we can assign.

WORKGROUP:

1)No Centralized Administration.

2)Not much security for Data, User & Groups. (Depends on Configuration)

3)No Server & Client Matter..Each pc reacts like a Client as well as Server.

4)Basically Windows 98 & XP is going to used in Clients side.

5)We can assign permission to drives & folder & files but much security than Domain