an XML file (named "ejb-jar
an XML file packaged with the enterprise beans in an EJB JAR file or an EAR file
an xml file that contains information about the item which is being deployed
Information that describes both the structure of an Enterprise Java Bean, and the information required by it at runtime.
An attribute that determines how and where an Enterprise JavaBean (EJB) is deployed.
A Deployment Descriptor (DD) is a component in Java 2 Platform, Enterprise Edition applications that describes how a web application should be deployed. It directs a deployment tool to deploy a module or application with specific container options and describes specific configuration requirements that a deployer must resolve.