URLs can make requests of host computers. For example, the URL https://www.ooportal.com is a request for the computer named www in the domain ooportal.com 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).