Application server just means that the .EXE resides on another machine (the server)...when the client runs the program, they load it off the server machine...this can be used in situations where the client machine doesn't have a hard drive, or when you are using server packages with licence regulations...

Client/server applications mean that the server is running a program (like SQL Server or Oracle) that has the job of receiving requests and providing data to client programs. With client/server, you have one server and multiple clients. The clients can actually be different programs. For instance, you could have a program that is at a point of sale that sends data to the server when a sale is made....that data is now available to the accounting department that is running an entirely different program...

One important difference with client/server and non-client/server multi-user applications is that client/server applications cut-down on network traffic...as an example, if you performed a query on a remote table with a non-client/server multiuser app, the entire table and index file would have to pass through the network to the 'client' machine where the query would then be executed....in a true client/server application, the request would be sent to the server app, the server app would process the request and send only the results to the client...so if you were searching a 10Mb file to find 5K of data you would cut-down on network traffic dramatically....

Take care,

Joe


>Hello.
>
>Are there some experts tell me the difference between client server and application server ?
>
>Sunny