Uniform Resource Locator is an URI which also specifies where the identified resource is available and the protocol for retrieving it. In popular usage and many technical documents, it is often confused as a synonym for Uniform Resource Identifier (URI), which are not required to specify how to locate the resource.
example.com is a domain name; an IP address or other network address might be used instead. In addition, URLs that specify
 as a scheme (such as https://example.com/) normally denote a secure web site.
The hostname portion of a URL, if present, is case insensitive (since the DNS is specified to ignore case); other parts are not required to be, but may be treated as case insensitive by some clients and servers, especially those that are based on Microsoft Windows. For example:
Any domain name can also be a hostname, as long as the restrictions mentioned below are followed. So, for example, both "en.wikimedia.org" and "wikimedia.org" are hostnames because they both have IP addresses assigned to them. The domain name "pmtpa.wikimedia.org" is not a hostname since it does not have an IP address, but "rr.pmtpa.wikimedia.org" is a hostname. All hostnames are domain names, but not all domain names are hostnames.
US Patent Issued to Salesforce.com on Nov. 12 for "System, Method and Computer Program Product for Performing One or More Actions Utilizing a Uniform Resource Locator" (California Inventors)
Nov 12, 2013; ALEXANDRIA, Va., Nov. 12 -- United States Patent no. 8,583,587, issued on Nov. 12, was assigned to salesforce.com inc. (San...
An update on Uniform Resource Locator (URL) decay in MEDLINE abstracts and measures for its mitigation.(Research article)
Jun 11, 2008; Authors: Erick Ducut (corresponding author) (equal contributor) ; Fang Liu (equal contributor) ; Paul Fontelo...