Modern Technologies in Web Services Research

Web Services
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What Are Web Services? Easy-to-Learn Concepts with Examples

This is less rigid than the RPC style. The communication is more apparent to the application writer, who deals with the document object model DOM of the recived message, rather than having parameters unmkarshalled automatically. The document mode of SOAP seems to be getting the most traction in the ecommerce stack.

This is not an accident. It is easier in principle to extend an XML-based message system to include more information as a system grows. In fact, RDF is especially powerful in this area, as new information can be parsed into an entity-relationship form by old agents, and it becomes logically clear which parts can be ignored by those who do not understand them.

Functionality which has been mentioned as required above the basic layer at runtime includes:.

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Higher layers in the description above WSDL are known variously as coordination, orchestration, choreography, composition. Composability of web services refers to the building, from a set of web services, of something at a higher level, typically itself exposed as a larger web service. Choreography refers more abstractly the part of the description of web services which defines a way, or the ways, in which a acyual invokations to various web services work together. Peltz uses Choregraphy when it involves multiple parties, and Orchestration when it is internal to one party.

Thus the former crosses application boundaries, the latter also crosses organization boundaries. There is so small amount overlap here, which has led to some confusion. To be general, one might say, for example, that a flight confirmation must involve an already reserved flight. This the actual constraint. One can describe a particular choregraphy a particular dance, if you like in which a flight query service is called, and produced a list of flights, and then a reservation service is called to reserve the flight, that is successful, and the resulting reservation is passed to the confirmation service.

It may be that there are other ways -- other choreographies -- in which one could have achived a reserved flight. The engineer has the choice of modelling the many possible ways all in one choreogrpahy, or of making several choreographies.

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Web services can be combined in such as way that messages are passed around in a very random fashion. However, a particular design techniqe is for a master process to delegate to other services in a recusive tree-like manner, as has been de rigueur in programming languages since Pascal. For example, if the consumer asks the travel agent and the the travel agent books a hotel, the hotel will reply to the travel agent, not to the consumer.

This makes everything orderly. This is a programming language approach with. As neither is intended to do the actual calculations or business rules, it would be closer to compare themm with scripting shells such as bash which handle concurrency and synchronization but actually call programs or rather web services to do the real work.

Different attitudes - top down program design, or bottom-up agent design, bottom up document design. The Paper Trail concept is that the state of a mult-agent multi-process system can be looked at, sometimes rather effectively, as a function of the documents which have been transmitted. The process-oriented attitude to a bank-customer relationship may be "In parallel, the customer writes checks, merchants pay in checks, credit card transactions happen, all month. Then, the charges, interest are assessed and a bank statement sent from the bank to the customer". The document-, or message-oriented one is more like "Every month a bank balance lists valid transaction dated that month.

A cleared incoming check in a valid transaction. A cleared outgoing check is a valid transaction.

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Due to the new and practical utility of Web service technology, many researchers began to work in this field. New ideas, applications and. NET technologies to interoperate. New WS standards have been developed through the cooperation examine alternative technologies for deploying web services, e.g. RESTful web .. esents a concrete case study for RESTful web services.

A validated credit card debit is a valid transaction. A check is cleared if it is incoming and there is a matching transfer from the payee bank", and so on. This builds the relationships up in a bottom-up, weblike way.

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Started in , the long-term goal of ICWS is to build up the most reputable conference for the international community on Internet and Web-based services. It is very clear that the ICWS belongs to everyone. The Services Society S2 is a non-profit professional organization that has been created to promote worldwide research and technical collaboration in services innovations among academia and industrial professionals.

Its members are volunteers from industry and academia with common interests. S2 is registered in the USA as a " c organization", which means that it is an American tax-exempt nonprofit organization.

Web Services Beginner Tutorial 4 - What are SOAP Web Services

This encouraged Philip to become a web developer to create accessible websites, so that people with disabilities can use them just like everyone else. Philip was born in Seoul, South Korea, where he lived until He moved to California for a better education, and he has lived across the United States, from the West Coast to the Midwest, before landing here at Duke. Sarah Dooley is an information architect at Duke Web Services. Her aim is to make sure that each project results in an experience that is usable, accessible, and even delightful for its audiences. A credentialed librarian, Sarah has previously worked as a web and user experience specialist at a North Carolina statewide library consortium, and as a project manager at Triangle-area web shops. She has a wide variety of experience with website planning and prototyping, user research, and other UX methods. In her role as Web Designer, she creates experiences for the Duke community that are usable and delightful.

She is passionate about user experience and staying informed of the ever-changing trends, tools, and methods in the design community. Outside of the office Jen enjoys reading, watching tv shows, and exploring the local food and beer scene. She employs a strategic design process to plan for site content, structure, and interaction and is passionate about user research and UX best practices. Lauren has been working in higher education for over a decade and combines formal training in design instructional, visual, web, and UX , research methods, psychology, anthropology, and information science with an innate curiosity, empathy, eye for detail, and drive for excellence.

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She loves photography, animals, live music, and spending time with family. David is a developer for Duke Web Services with a passion for building beautiful, responsive, and user-friendly websites. While primarily a front-end Drupal developer, he enjoys learning back-end development languages and techniques. David is a North Carolina native and has lived in the Triangle area for over two decades.

Outside work, he enjoys cycling road and mountain , traveling, go-karting, and exploring local restaurants and breweries. She is a creative problem solver who incorporates user-centered design practices into user research and recommendations for site structure and functionality. With her background in publishing and information science, Bendte has a keen eye for detail while also being able to see the big picture of what clients are wanting to achieve.

Passionate about user experience and web technologies, she currently volunteers with the Triangle User Experience Professionals Association and helps organize their annual conference, UX Y'all. In her time away from the office, she enjoys traveling with her husband, gluten-free cooking, visiting tea houses, and learning about synthesizers. David Mason is a project coordinator for Duke Web Services.

His service desk experience honed his customer service and task management skills, while encouraging participation in many IT projects. David's interest in project management grew while working on an internal research assignment on the adoption of Box cloud storage services. He is excited to build new relationships, contribute to team efforts, and deliver innovative products to improve the Duke community. Outside of work, David enjoys volunteering in community outreach organizations. He also enjoys composing music and has music available online with musical group Graft3d.

Brian is a developer for Duke Web Services, focused on building enjoyable, responsive, and accessible websites and applications. Brian is a recent Tennessee transplant with a background in education. Quality work and life-long learning are the personal goals he strives to achieve.

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Brian is a loving husband and proud father. He enjoys Alfred Hitchcock movies, concerts, retro gaming, and Carolina Hurricanes games with his family.