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David Linthicum

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Top Stories by David Linthicum

With the advent of Web services and SOA, we've been seeking to create architectures and systems that are more loosely coupled. Loosely coupled systems provide many advantages including support for late or dynamically binding to other components while running, and can mediate the difference in the component's structure, security model, protocols, and semantics, thus abstracting volatility. This is in contrast to compile-time or runtime binding, which requires that you bind the components at compile time or runtime (synchronous calls), respectively, and also requires that changes be designed into all components at the same time due to the dependencies. As you can imagine, this type of coupling makes testing and component changes much more difficult. The advantages of loosely coupled architectures, as found within many SOAs, are apparent to many of us who have built ar... (more)

SOA to the Rescue in Recession

Many organizations out there don't really have to sell SOA. They understand that hype is the driver, and, in essence, leverage the thousands of articles and books on the topic to sell this architectural pattern. However, in most cases SOA has to be sold in the enterprise. If you're doing SOA right, you'll find that the cost quickly goes well into the millions, so you'll need executive approval for that kind of spending. However, the benefits are there as well, including the core benefit of agility that could save the company many times the cost of building a SOA. Or, at least, tha... (more)

Real-World AJAX

So, what do AJAX and SOA have in common? The answer: Everything. Is AJAX an enterprise technology? The answer: Absolutely. As we move to next-generation enterprise architectures using newer notions such as Service Oriented Architecture (SOA), there's a need for a dynamic Web interface that can layer over services and provide more value to the enterprise. Moreover, the enterprise in general can benefit from the advantages of AJAX; it's just a matter of making enterprise developers as well as the SOA architects aware of AJAX. AJAX is becoming the standard dynamic interface for the W... (more)

Finding the Fit for XSLT - Filling a hole in the puzzle

Although a number of standards exist for information interchange and process definition, industry standards have yet to emerge for defining common integration server and B2B integration server services such as routing, rules processing, and transformation. In the absence of such standards, individual vendors have created proprietary approaches to these basic information-processing services. As a result, we are confronted with features that are not interchangeable, require specialized training, and do not provide a common framework of services. Even as we begin to implement stand... (more)

Ontology and Integration - Managing Application Semantics Using Ontologies and Supporting W3C Standards

Many in the world of application integration have begun to adopt the notion of ontology (or the instances of ontology: ontologies). Ontology is a term borrowed from philosophy that refers to the science of describing the kinds of entities in the world and how they are related. Ontologies are important to application integration solutions because they provide a shared and common understanding of data (and, in some cases, services and processes) that exists within an application integration problem domain, and how to facilitate communication between people and information systems.... (more)