I am currently developing a RESTful Web Service and will be using
query strings extensively.

There seems to be no guide line regarding how to form the query
strings and parse it , in a uniform manner.

For instance some frameworks like Windows Communication Foundation
treat query strings as a part of URI.

For example http://localhost//MyResources/{Id}/State

Here Id is treated as a query string and the value of Id is provided
as a part of URI

Something like this -> http://localhost//MyResources/1/State

However most frameworks treat query strings as key value pairs.
Something like http://localhost//MyResources/State?Id =1

RFC 3986 says both mechanisms MAY be used.

Is there a uniform format for specifying the query strings?