What is 2-tier and 3-tier architecture?

Answer Posted / mukundvishy

Two tier is Client Server architecture. For example using
Oracle database and Oracle Forms/VB.

3 tier is introducing one more tier. For example, a web
server (IIS, Apache, Tomcat etc.), an EJB Application server
(Weblogic, websphere etc.) and a database (oracle, sql
server etc.)

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