what is N-Tier programming?

Question

I can program in a few languages and am learning sql/oracle.
What is a good way to get some experience programming n-tier type stuff? and If you have done any, Where did you start?

Answer 1

The simplest N-tier programming is client-server. There are only two tiers, client and server. Then there's three-tier (it used to be thought of as client-middleware-server; these days, you hear a lot about client-application server-database server and presentation layer-business logic layer-data manipulation layer).

You can do three-tier programming on any database-enabled Web site.