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Chapter 1. Basic Principles of Data Sour... > Application Server Technologies Over...

Application Server Technologies Overview

Before we discuss the pros and cons of the various application technologies, let’s clarify some terminology. Application server technology refers to the overall server-side system for communicating with data sources and other servers, including Web and mail servers. Some examples of application technologies are ASP, ColdFusion, PHP, and JSP. Application server technologies are also referred to as server models. An application server is a particular piece of software that implements an application server technology; Apache Tomcat, BEA WebLogic, and IBM Websphere are application servers that run JSP.

You can choose from a number of application technologies, but only a few have achieved prominence. In some situations, the choice may have already been made for you if you’re working for a client who has an application server in place. Some application server technologies, such as ASP, allow you to write code in more than one language; ASP supports both VBScript and JScript (another name for JavaScript). Because server-side coding is fairly involved, many Web developers specialize in one or two application servers in a specific language.


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