What is URI (Uniform Resource Identifier)?
URI is a method of identifying a unit of content on the internet. Content can be text page, image file, audio or video file or anything that exist on the web. Other methods (Such as URL or URN) are subset of URI.
What is URL (Uniform Resource Locator)?
URL (a type of URI) is a unique address of the content unit on the web. For example ‘http://www.digitalpurview.com/online-task-manager/’ is the address of the webpage titled ‘Online Task Manager’ and uses HTTP protocol. Similarly, we can have address of image file, audio file, video file stored on web server. FTP is another protocol that can be used for transferring (or downloading) files. The address would start with ftp:// . Mailto is another protocol that can be used for identifying email address.
What is URN (Uniform Resource Name)?
URN (a type of URI) is a name identifier of the file or content on the web. The idea was that the content can move from website to other. URN will still uniquely identify it irrespective of location stored.
