![]() The Atom Syndication Format is an XML language used for web feeds, while the Atom Publishing Protocol (AtomPub or APP) is a simple HTTP-based protocol for creating and updating web resources.Web feeds allow software programs to check for updates published on a web site. “The name Atom applies to a pair of related standards.SOAP is the successor of XML-RPC, though it borrows its transport and interaction neutrality and the envelope/header/body from elsewhere”. As the data is returned in a standardized machine-parsable format, it may be integrated directly into a third-party site.The SOAP architecture consists of several layers of specifications for message format, message exchange patterns (MEPs), underlying transport protocol bindings, message processing models, and protocol extensibility. The site will return an XML-formatted document with the resulting data (prices, location, features, etc). SOAP forms the foundation layer of the web services protocol stack providing a basic messaging framework upon which abstract layers can be built.As a layman’s example of how SOAP procedures can be used, a SOAP message could be sent to a web service enabled web site, for example, a house price database, with the parameters needed for a search. It relies on Extensible Markup Language (XML) as its message format and usually relies on other Application Layer protocols, most notably Remote Procedure Call (RPC) and HTTP for message negotiation and transmission. “Originally defined as Simple Object Access Protocol, is a protocol specification for exchanging structured information in the implementation of Web Services in computer networks.“Representation State Transfer is intended to evoke an image of how a well-designed Web application behaves: a network of web pages (a virtual state-machine), where the user progresses through an application by selecting links (state transitions), resulting in the next page (representing the next state of the application) being transferred to the user and rendered for their use.” Many people advocate the use of REST-ful Web Services, as they insure that services are “part of” the web, rather than “behind it” (simply put, they are always linkable).” REST does not dictate the shape of URLs beyond their existing specification, nor does REST define the format of the returned XML, as long as it is well-formed. Once received the second computer treats the URL as a command, processes it, and returns the results as an XML stream. In such an environment, one computer creates a URL defining a request from a second program or computer. “Representational State Transfer (REST) works on top of HTTP and takes advantage of URLs as a sort of “command line interface”.“An application programming interface (API) is a set of functions, procedures, methods, classes or protocols that an operating system, library or service provides to support requests made by computer programs.”. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |