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PURLs allow third party control over both URL resolution and resource metadata provision. A URL is simply an address of a resource on the World Wide Web. A Persistent URL is an address on the World Wide Web that causes a redirection to another Web resource. If a Web resource changes location (and hence URL), a PURL pointing to it can be updated.
This may be contrasted with a Uniform Resource Locator (URL), which may encode within the identifier such attributes of the resource as the protocol to be used to access the server holding the resource, the server host name and port number, and perhaps even location specifics such as the name of a file in the server file system containing the ...
URL scheme in the GNOME desktop environment to access file(s) with administrative permissions with GUI applications in a safer way, instead of sudo, gksu & gksudo, which may be considered insecure GNOME Virtual file system: admin:/ path / to / file example: gedit admin:/etc/default/grub. See more information on: app
Under HTTP 1.0, connections should always be closed by the server after sending the response. [1]Since at least late 1995, [2] developers of popular products (browsers, web servers, etc.) using HTTP/1.0, started to add an unofficial extension (to the protocol) named "keep-alive" in order to allow the reuse of a connection for multiple requests/responses.
Both permalink and PURL (persistent uniform resource locator) are used as a persistent URL, and redirect to the location of the requested web resource. The main differences in the concepts are about domain name and time scale : PURL uses an independent dedicated domain name, and is intended to last for decades ; permalinks usually do not change ...
A Uniform Resource Name (URN) is a Uniform Resource Identifier (URI) that uses the urn scheme.URNs are globally unique persistent identifiers assigned within defined namespaces so they will be available for a long period of time, even after the resource which they identify ceases to exist or becomes unavailable. [1]
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For example, a company that changes its corporate name could sell its old i-name to another company, while both companies could retain their original i-numbers. What most differentiates i-names from domain names is that in practice they will have a synonymous (equivalent) persistent i-number (below).