Methods and extended URI (Uniform Resource Identifier) schemes for advanced web applications. In one aspect, the extended URI scheme enables an application to employ multiple resources to service a request, wherein parameters corresponding to each of the resources may be passed via a URI string from a client to an application used to service the client. In accordance with other aspects, the extended URI scheme achieves (a) natural external reference-ability of internal application resources, eliminating the need for intermediate mapping, (b) separation of functional and data navigation states, and (c) separation of parameters of individual resources involved in request processing, de-risking name conflicts and increasing usability.