what is the difference between MVC Model and 3-tier app ?

what is the difference between MVC Model and 3-tier app ?

Try Googling for each, and come back if you have some more specific Java questions.

The truth is, when all is said and done, one does not teach a subject, one teaches a student how to learn it. Teaching may look like administering a dose, but even a dose must be worked on by the body if it is to cure. Each individual must cure his or her own ignorance...
J. Barzun.

each model try to separate code into 3 classes one for db layer, one for presentation (view ) and one of business operations so what is the difference?

Quote:

---

Originally Posted by ahmed17

each model try to separate code into 3 classes one for db layer, one for presentation (view ) and one of business operations...

---

Three layers, not classes.

Quote:

---

so what is the difference?

---

You basically described a 3-tier app. The MVC concept is more generic, so a 3-tier app could be considered an instance of MVC. Here is a useful link: Java App Design with MVC.

All models are wrong; some models are useful...
G. Box

Thanks.