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home » info bank » Articles and Tutorials Sat, Jul 14, 2007
Articles and Tutorials

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Can web service adoption usher-in a collaborative development process?
Category: SOAP and Web Services
Date: Sat, Apr 24, 2004
Service Oriented Mass Customization (SOMC) asks us to stop thinking of an application as an isolated island lacking a semantic bridge to the rest of the user's world. Instead allow users to build bridges by explicitly mapping elements from your application domain to others available in their burgeoning Service oriented architecture (SOA). Once these bridges are built, users can take your application to strange and exotic places.
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Thirty best practices for integrating Web services
Category: SOAP and Web Services
Date: Sun, Feb 22, 2004
Excerpt from the book Service-Oriented Architecture: A Field Guide to Integrating XML and Web Services.
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XML Q&A with Darshan Singh
Category: General
Date: Sun, Nov 30, 2003
In this article, perfectxml.com managing editor, Darshan Singh, responds to questions asked by PerfectXML visitors. In this part:
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Integration Models
Category: SOAP and Web Services
Date: Sun, Nov 23, 2003
The integration models we have today are either loosely coupled or tightly coupled. They are message-based or method-based. They are synchronous or asynchronous. Putting these things together in an intelligent way is essential if you are going to archive the promise of web services. In this chapter, we will discuss all of these models, and show which ones are used by web services and why.
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Simple Object Access Protocol (SOAP)
Category: SOAP and Web Services
Date: Sun, Nov 23, 2003
The Simple Object Access Protocol is a standard that has provided a simple solution to a complex problem. The problem is that integrating systems is difficult. Thatís not really news, but it is a fact that many I.T. professionals are well aware of. The main area of incompatibility arises because information and objects are distributed all over the place. The SOAP standard provides a set of tags and an environment that allows systems to request information from other systems by sending self-describing messages over any network. SOAP is really just an envelope, but its simplicity means that it is easy to use and very flexible. In this chapter, you will learn about this most important standard for web services.
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Building a House of Standards
Category: SOAP and Web Services
Date: Sat, Nov 22, 2003
The main goals of Web services are three-fold:
  • Get programs talking to each other, because we want to leverage the existing technology.
  • Be cheap, compact and scalable for all parties, because we want to have web services everywhere, providing services to everyone, using any device.
  • Build on the infrastructure, because it's already paid for.
The best way to get there is to build an environment based on standards that everyone agrees on. In this chapter, we will build a house of standards showing where each one fits, and how they relate to each other. It is only by using internationally recognized standards that you can create systems that can communicate with your trading partners around the world.
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XForms Building Blocks
Category: General
Date: Wed, Oct 22, 2003
This excerpt from the book XForms Essentials explains the concepts underlying the design of XForms, as well as practical issues that come into play, including a complete, annotated real-world example.
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XQuery: A Guided Tour
Category: General
Date: Wed, Oct 15, 2003
XQuery is not only a query language, but also a language that can do fairly general processing of XML. It is a strongly typed language that works well with data that may be strongly or weakly typed. Because the types used in XQuery are the same types used in XML and XML Schema, the type system is a better match for the data that is being processed. If the XML is governed only by a DTD or has no schema, the appropriate types are document, element, attribute, node, text node, processing instruction, comment, ID, IDREF, IDREFS, and so on. A strongly typed language that does not support these types tends to get in the way, because it is a poor match for the data being processed, and the language insists on the wrong things. If W3C XML Schema types are present in the data, these types are observed as well. Implementations and users of XQuery can work at various levels of typing by deciding whether to import schemas, whether to use static typing, and whether to set the validation mode to strict, lax, or skip.

XQuery was designed to be compact and compositional, and to be well suited for views of data that is not physically stored as XML. Both data integration and general purpose XML processing are likely to be important applications of XQuery. In practice, queries written in XQuery tend to be well suited to the kinds of tasks for which XML is generally used.
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Microsoft InfoPath 2003 Guided Tours: InfoPath 2003 and Oracle
Category: General
Date: Tue, Sep 2, 2003
A step-by-step guided tour on connecting to Oracle database from InfoPath 2003 via .NET Web service.
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Java XML by Example (Part I): JAXP
Category: General
Date: Fri, Jul 11, 2003
Java promises "portable code" and XML assures "portable data". These two technologies can be used together to architect enterprise application that work cross-platform and over the Internet. Sun Microsystems and various other organizations are continuously working to add and enhance XML/Web services support in Java.

The goal of this articles series is less talk and more code, with focus on a particular Java XML technology. This time, we'll focus on Java API for XML Processing (or JAXP).
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