Post #519

URL, URI, URN - What are the differences? The diagram below shows a comparison of URL, URI, and URN. 🔹 URI URI stands for Uniform Resource Identifier. It identifies a logical or physical resource on the web. URL and URN are subtypes of URI. URL locates a resource, while URN names a resource. A URI is composed of the following parts: scheme:[//authority]path[?query][#fragment] 🔹 URL URL stands for Uniform Resource Locator, the key concept of HTTP. It is the address of a unique resource on the web. It can be used with other protocols like FTP and JDBC. 🔹 URN URN stands for Uniform Resource Name. It uses the urn scheme. URNs cannot be used to locate a resource. A simple example given in the diagram is composed of a namespace and a namespace-specific string. source