The module element represents a single J2EE module and contains an ejb, java, connector, or web element, which indicates the module type and contains a path to the module file, and an optional alt-dd element, which specifies an optional URI to the post-assembly version of the deployment descriptor. The application deployment descriptor must have one module element for each J2EE module in the application package.
The connector element specifies the URI of a connector-jar, relative to the top level of the application package.