Was it der Unterschied zwischen:

• URI = Uniform Resource Identifier
• URL = Uniform Resource Locator
• URN = Uniform Resource Name

 

Definition URI:

A Uniform Resource Identifier (URI) is a compact sequence of characters that identifies an abstract or physical resource. – RFC3986

A URI can be further classified as a locator, a name, or both. – RFC3986/Section 1.1.3

 

Definition URL:

The term „Uniform Resource Locator“ (URL) refers to the subset of URIs that, in addition to identifying a resource, provide a means of locating the resource by describing its primary access mechanism (e.g., its network „location“). – RFC3986/Section 1.1.3

 

Definition URN:

The term „Uniform Resource Name“ (URN) has been used historically to refer to both URIs under the „urn“ scheme [RFC2141], which are required to remain globally unique and persistent even when the resource ceases to exist or becomes unavailable, and to any other URI with the properties of a name. – RFC3986/Section 1.1.3

 

Vereinfacht gesprochen ist jede URL und URN ein URI. Aber nicht jede URI ist eine URL.

Beispiel einer URI bestehend aus URL und URN-Teil:
https://www.google.de/ = URL und URN

 

 

Referenzen (alles URIs die aus einer URL und dem URN bestehen):

• IETF RFC3986
• https://en.wikipedia.org/wiki/Uniform_Resource_Identifier
• https://en.wikipedia.org/wiki/URL
• https://en.wikipedia.org/wiki/Uniform_Resource_Name
• https://www.ionos.de/digitalguide/websites/web-entwicklung/uniform-resource-identifier/
• https://mohitgoyal.co/2017/06/09/difference-between-uri-url-and-urn/
• https://wiki.selfhtml.org/wiki/URI