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A URL is a specific type of Uniform Resource Identifier (URI), [2] [3] although many people use the two terms interchangeably. [4] [a] URLs occur most commonly to reference web pages ( HTTP / HTTPS) but are also used for file transfer ( FTP ), email ( mailto ), database access ( JDBC ), and many other applications.
In a web service, a web technology such as HTTP is used for transferring machine-readable file formats such as XML and JSON. In practice, a web service commonly provides an object-oriented web-based interface to a database server, utilized for example by another web server, or by a mobile app , that provides a user interface to the end-user.
URL is a useful but informal concept: a URL is a type of URI that identifies a resource via a representation of its primary access mechanism (e.g., its network "location"), rather than by some other attributes it may have. As such, a URL is simply a URI that happens to point to a resource over a network.
v. t. e. In computing, POST is a request method supported by HTTP used by the World Wide Web . By design, the POST request method requests that a web server accepts the data enclosed in the body of the request message, most likely for storing it. [1] It is often used when uploading a file or when submitting a completed web form .
This is a very brief history of web server programs, so some information necessarily overlaps with the histories of the web browsers, the World Wide Web and the Internet; therefore, for the sake of clarity and understandability, some key historical information below reported may be similar to that found also in one or more of the above-mentioned history articles.
The Web Services Description Language ( WSDL / ˈwɪz dəl /) is an XML -based interface description language that is used for describing the functionality offered by a web service. [citation needed] The acronym is also used for any specific WSDL description of a web service (also referred to as a WSDL file ), which provides a machine-readable ...
Query string. A query string is a part of a uniform resource locator (URL) that assigns values to specified parameters. A query string commonly includes fields added to a base URL by a Web browser or other client application, for example as part of an HTML document, choosing the appearance of a page, or jumping to positions in multimedia content.
A server uses "Alt-Svc" header (meaning Alternative Services) to indicate that its resources can also be accessed at a different network location (host or port) or using a different protocol When using HTTP/2, servers should instead send an ALTSVC frame. Alt-Svc: http/1.1="http2.example.com:8001"; ma=7200: Permanent Cache-Control