Web service assignment

Web service assignment

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  2019 ANCY M VARGHESE ROLLNO: 02 ENGLISH(OPTIONAL) B.Ed Sem 1 MOUNT TABOR TRAINING COLLEGE. EDUCATIONAL TECHNOLOGY ASSIGNMENT
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  INTRODUCTION Web service isa service offered by an electronic device to another electronic device, communicating with each other via the World Wide Web. 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. Many organizations that provide data in formatted HTML pages will also provide that data on their server as XML or JSON, often through a Web service to allow syndication, for example, Wikipedia's Export. Another application offered to the end user may be a mash up, where a Web server consumes several Web services at different machines and compiles the content into one user interface. Web services are self-contained, modular, distributed, dynamic applications that can be described, published, located, or invoked over the network to create products, processes, and supply chains. These applications can be local, distributed, or web-based. Web services are built on top of open standards such as TCP/IP, HTTP, Java, HTML, and XML.Web services are XML-based information exchange systems that use the Internet for direct application-to-application interaction. These systems can include programs, objects, messages, or documents. A web service is a collection of open protocols and standards used for exchanging data between applications or systems. Software applications written in various programming languages and running on various platforms can use web services to exchange data over computer networks like the Internet in a manner similar to inter-process communication on a single computer. This interoperability (e.g., between Java and Python, or Windows and Linux applications) is due to the use of open standards. A complete web service is, therefore, any service that is available over the Internet or private (intranet) networks. It uses a standardized XML messaging system. It is not tied to any one operating system or programming language. It is self-describing via a common XML grammar. It is discoverable via a simple find mechanism. This assignment involves web services, including e-mail, chat and online forums.
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  E-mail Electronic mail (emailor e-mail) is a method of exchanging messages between people using electronic devices. Invented by Ray Tomlinson, email first entered limited use in the 1960s and by the mid-1970s had taken the form now recognized as email. Email operates across computer networks, which today is primarily the Internet. Some early email systems required the author and the recipient to both is online at the same time, in common with instant messaging. Today's email systems are based on a store-and-forward model. Email servers accept, forward, deliver, and store messages. Neither the users nor their computers are required to be online simultaneously; they need to connect only briefly, typically to a mail server or a webmail interface for as long as it takes to send or receive messages. Chat Chat may refer to any kind of communication over the Internet that offers a real-time transmission of text messages from sender to receiver. Chat messages are generally short in order to enable other participants to respond quickly. Thereby, a feeling similar to a spoken conversation is created, which distinguishes chatting from other text-based online communication forms such as Internet forums and email. Online chat may address point-to- point communications as well as multicast communications from one sender to many receivers and voice and video chat, or may be a feature of a web conferencing service. Online chat in a less stringent definition may be primarily any direct text-based or video-based (webcams), one-on-one chat or one-to-many group chat (formally also known as synchronous conferencing), using tools such as instant messengers, Internet Relay Chat (IRC), talkers and possibly MUDs. The expression online chat comes from the word chat which means "informal conversation". Online chat includes web-based applications that allow communication – often directly addressed, but anonymous between users in a multi- user environment. Web conferencing is a more specific online service, that is often sold as a service, hosted on a web server controlled by the vendor.
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  Online Forums An Internetforum, or message board, is an online discussion site where people can hold conversations in the form of posted messages.[1] They differ from chat rooms in that messages are often longer than one line of text, and are at least temporarily archived. Also, depending on the access level of a user or the forum set-up, a posted message might need to be approved by a moderator before it becomes publicly visible.Forums have a specific set of jargon associated with them; example: a single conversation is called a "thread", or topic. A discussion forum is hierarchical or tree-like in structure: a forum can contain a number of subforums, each of which may have several topics. Within a forum's topic, each new discussion started is called a thread and can be replied to by as many people as so wish.Depending on the forum's settings, users can be anonymous or have to register with the forum and then subsequently log in to post messages. On most forums, users do not have to log in to read existing messages.
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  CONCLUSION A Web serviceinvolves a service provider and a service requester (client). Because Web services feature language transparency, it doesn’t matter whether the underlying system that provides the service is written in Java while the client is written in Perl, Python or Ruby. For example, through Web services a Windows server can interact with a Linux server or serve an application to computer desktops, laptops or smart phones and other mobile devices over the World Wide Web. Web services allow various applications to talk to each other and share data and services among themselves. Other applications can also use the web services. For example, a VB or .NET application can talk to Java web services and vice versa. Web services are used to make the application platform and technology independent. Web services use standardized industry standard protocol for the communication. All the four layers (Service Transport, XML Messaging, Service Description, and Service Discovery layers) use well-defined protocols in the web services protocol stack. This standardization of protocol stack gives the business many advantages such as a wide range of choices, reduction in the cost due to competition, and increase in the quality. Web services use SOAP over HTTP protocol, so you can use your existing low-cost internet for implementing web services. This solution is much less costly compared to proprietary solutions like EDI/B2B. Besides SOAP over HTTP, web services can also be implemented on other reliable transport mechanisms like FTP. Web Services, therefore, are the means by which devices communicate over the World Wide Web. Whether you use a mobile application, search engine or an enterprise system, the user piece of the application (the interface) resides on your device. The data, and potentially the business rules, live on some other server on the network. How your interface communicates with the server piece is the role of Web Services.
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  Reference “Web Service.” Wikipedia,Wikimedia Foundation, 4 Oct. 2019, en.wikipedia.org/wiki/Web_service. “Email.” Wikipedia, Wikimedia Foundation, 18 Oct. 2019, en.wikipedia.org/wiki/Email. “What Is Chat?” Computer Hope, 31 Jan. 2019, www.computerhope.com/jargon/c/chat.htm. “Internet Forum.” Wikipedia, Wikimedia Foundation, 22 Sept. 2019, en.wikipedia.org/wiki/Internet_forum. Tutorialspoint.com. “Top 10 Online Forums.” Www.tutorialspoint.com, www.tutorialspoint.com/articles/top-10-online-forums.