Application Server

An application server is an application program that accepts connections in order to service requests, by sending back responses.

Application Server


An application server is an application program that accepts connections in order to service requests, by sending back responses. An application server   can run remotely (connected to client through a computer network) or can exist on the same computer where the client application is running. Examples include file server, database server, backup server, print server, mail server, web server, FTP server, application server, VPN server, DHCP server, DNS server, WINS server, logon server, security server, domain controller, backup domain controller, proxy server, firewall, etc.

Application server are developed to support the quick development of the enterprise applications. They provide security and state maintenance with the data base and persistence.

An application server may be a part of  a three tier architecture model. A three tier architecture includes the Client Tier, Middle Tier and the EIS (Enterprise Information System) Tier. It may consists of Presentation Tier (as the GUI interface), Middle Tier as the collection of business logic application and the EIS (Enterprise Information System). The view tier is nothing but the web based graphical user interface to interact with the clients, Middle tier is the combination of web containers and the EJB containers. EIS contains persistence and the database management systems to support the applications. JEE  Platform requires database to store the business data. This database is accessible by means of JDBC, JDO or the SQLJ APIs. We can also access the database through enterprise beans, web components and the application client components. 

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Application Server

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Ravi Kumar
April 25, 2011

Explain the relation between Application Server and a database.
Abhishek Sharma
June 6, 2011
serverside processing using javascript?

Please rectify your diagram on . javascript runs on client, not server.
Tsvetelina Borisova
January 6, 2012
Links don't work

The lesson is great! Thank you. The links down don't work.
January 8, 2013
android project

May 23, 2012
worst navigation links

Hi, Even though your content is good.. but your navigation sucks.. even i press next button it will remain in same page. I wish you fix this one soon. Anyway nice contents...
Penchal Ch
June 14, 2012

June 13, 2013

I am a final year btech ECE student..i want to start job ortnieed java training course in your institute..As my sem exam will be ovr by 13th june,i am looking forward to start the course beyond that date in your institute..please let me know when the course will start and whether placement will be provided and what companies do u provide for placement also let me know the present course fees