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Alternative Applications for URLs

Other uses for URLs

URLs can make requests of host computers. For example, the URL is a request for the computer named www in the domain to run a program.
This type of URL is used for building interactive Web sites using CGI scripts and other programming techniques.

A uniform resource locator (abbreviated URL; also known as a web address) is a specific character string that constitutes a reference to a resource. Most web browsers display the URL of a web page above the page in an address bar. A URL implies the means to access an indicated resource, which is not true of every URI. URLs occur most commonly to reference web pages (http), but can also have a role in
  1. file transfer (ftp),
  2. email (mailto),
  3. database access (JDBC),
  4. and many other applications (see URI scheme for a list).