Hi satish,
An application server is a software engine that delivers applications to client computers or devices. Moreover, an application server handles most, if not all, of the business logic and data access of the application (a.k.a. centralization). The main benefit of an application server is the ease of application development, since applications need not be programmed; instead, they are assembled from building blocks provided by the application server. For example, a wiki is an application server that allows users to build dynamic content assembed from articles. Moreover, wikipedia is an assembled wiki that delivers an encyclopedia stored in a filesystem, with changes to the encyclopedia stored in a database.
Although the term application server applies to all platforms, it has become heavily identified with the Sun Microsystems J2EE platform; however, it has also come to encompass servers of Web-based applications, such as integrated platforms for e-commerce, content management systems, and Web-site builders.
<b>Features</b>:
Application server products typically bundle middleware to enable applications to intercommunicate with dependent applications, like <b>Web servers</b>, <b>database</b> <b>management systems, and chart programs</b>. Some application servers also provide an API, making them operating system independent. <b>Portal</b>s are a common application server mechanism by which a single point of entry is provided to multiple devices.
Here in forums webdynpro which is an event driven programming,involves much of design, less percentage of coding comes under Application Server.
it is also standalone machine or application.it can have access to the particular client.
Regards
Bhargava
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