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Best Practice for URI construction?

  • To: "XML Developers List" <xml-dev@l...>
  • Subject: Best Practice for URI construction?
  • From: "Costello, Roger L." <costello@m...>
  • Date: Fri, 9 Dec 2005 09:21:13 -0500
  • Thread-index: AcX8y88cf76Sz8g3QjKuR8zgIdCFfg==
  • Thread-topic: Best Practice for URI construction?

uri construction
Hi Folks,
A URI is used to "identify" a resource:
A Uniform Resource Identifier (URI) is a compact sequence of characters that identifies an abstract or physical resource.[1]
I would like to bound the following discussion by considering just URLs that use the http scheme.
As I see it, there are two main approaches to constructing a URL to identify a resource:
Approach 1. URL Construction using Parent/Child Relationships
Here's an example of a URL that uses this approach:
After the [host] (http://www.location.org) there are a series of slash-delimited names.  The name to the left of a slash is the parent.  The name to the right of a slash is the child.
Approach 2. URL Construction using Key-Value Pairs plus Conjunction
This second approach is exemplified with this URL:
After the [host] there is the query string delimiter (?) followed by one or more key=value pairs ANDed together.
Hybrids of the above two approaches are also possible.  For example:
(1) The above URLs (I believe) are expressing the same thing - they are identifying the same resource.  So which is "better"?
(2) As was noted at the top, the purpose of a URL is to "identify" a resource.  Can every resource in the universe be identified using the above two approaches?  Are there resources that do not lend themselves to identification using the above two approaches?
[1] http://www.gbiv.com/protocols/uri/rfc/rfc3986.html


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