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The instance documents may indicate the published version of the schema using the xsi:schemaLocation attribute for Java EE namespace with the following location: http://java.sun.com/xml/ns/javaee/web-fragment_3_0.xsd ]]> The following conventions apply to all Java EE deployment descriptor elements unless indicated otherwise. - In elements that specify a pathname to a file within the same JAR file, relative filenames (i.e., those not starting with "/") are considered relative to the root of the JAR file's namespace. Absolute filenames (i.e., those starting with "/") also specify names in the root of the JAR file's namespace. In general, relative names are preferred. The exception is .war files where absolute names are preferred for consistency with the Servlet API. The web-fragment element is the root of the deployment descriptor for a web fragment. Note that the sub-elements of this element can be in the arbitrary order. Because of that, the multiplicity of the elements of distributable, session-config, welcome-file-list, jsp-config, login-config, and locale-encoding-mapping-list was changed from "?" to "*" in this schema. However, the deployment descriptor instance file must not contain multiple elements of session-config, jsp-config, and login-config. When there are multiple elements of welcome-file-list or locale-encoding-mapping-list, the container must concatenate the element contents. The multiple occurence of the element distributable is redundant and the container treats that case exactly in the same way when there is only one distributable. The servlet element contains the name of a servlet. The name must be unique within the web application. The filter element contains the name of a filter. The name must be unique within the web application. The ejb-local-ref-name element contains the name of an EJB reference. The EJB reference is an entry in the web application's environment and is relative to the java:comp/env context. The name must be unique within the web application. It is recommended that name is prefixed with "ejb/". The ejb-ref-name element contains the name of an EJB reference. The EJB reference is an entry in the web application's environment and is relative to the java:comp/env context. The name must be unique within the web application. It is recommended that name is prefixed with "ejb/". The resource-env-ref-name element specifies the name of a resource environment reference; its value is the environment entry name used in the web application code. The name is a JNDI name relative to the java:comp/env context and must be unique within a web application. The message-destination-ref-name element specifies the name of a message destination reference; its value is the environment entry name used in the web application code. The name is a JNDI name relative to the java:comp/env context and must be unique within a web application. The res-ref-name element specifies the name of a resource manager connection factory reference. The name is a JNDI name relative to the java:comp/env context. The name must be unique within a web application. The env-entry-name element contains the name of a web application's environment entry. The name is a JNDI name relative to the java:comp/env context. The name must be unique within a web application. A role-name-key is specified to allow the references from the security-role-refs. The keyref indicates the references from security-role-ref to a specified role-name.