The process whereby software is installed into an operational environment.

An XML file provided with each module and J2EE application that describes how they should be deployed. The deployment

descriptor directs a deployment tool to deploy a module or application with specific container options and describes specific

configuration requirements that a deployer must resolve.

A JMS administered object that encapsulates the identity of a JMS queue or topic. See point-to-point messaging system,

publish/subscribe messaging system.

An authentication mechanism in which a Web application authenticates itself to a Web server by sending the server a message

digest along with its HTTP request message. The digest is computed by employing a one-way hash algorithm to a concatenation

of the HTTP request message and the client's password. The digest is typically much smaller than the HTTP request and doesn't

contain the password.

An application made up of distinct components running in separate runtime environments, usually on different platforms

connected via a network. Typical distributed applications are two-tier (client-server), three-tier

(client-middleware-server), and multitier (client-multiple middleware-multiple servers).

In general, an XML structure in which one or more elements contains text intermixed with subelements. See also data.

An API for accessing and manipulating XML documents as tree structures. DOM provides platform-neutral, language-neutral

interfaces that enables programs and scripts to dynamically access and modify content and structure in XML documents.