[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Re: Major Historical SOA Milestone Today
Try: It tells you where the focal point of the domain is. Viewpoints: details are chaotic or organized depending on the proximity of the viewpoint to domain. A baseball is a point at 100 feet, a sphere at five feet, a curved surface at 1 inch, a cylinder wrapping a center at 1/10 inch, a fiber mass at 1/100 and so on. How well you understand the domain depends on the focal resolution of the viewpoint. The focal point of SOA is when one decomposes a business into requests for services by type regardless of implementation. That is why an object oriented architecture is not an SOA. OOP is a closer viewpoint and one may not need it for the SOA viewpoint (eg, one can implement an SOA without objects but I wouldn't want to do that). Yes, both REST and WS can be used to implement an SOA. We've had that debate here before. As I recall, it came down to how much hand rolling one wanted to do to build the product. len From: bryan rasmussen [mailto:rasmussen.bryan@g...] > Or could someone correct me? If I bumped into a service-oriented IT system > in one bank on one side of the street, and an object-oriented IT system in > another bank on the other side of the street, how would I tell which was > which (other than by the choice of jargon on the Powerpoint slides)? an anecdote of minor interest. We had a student in our office that did his thesis on SOA. got a very good grade, has a nice job now. This guy was quite smart and technically competent as well, I attempted a few times to get a description of SOA out of him. I never did get anything that I recognized as being technical, although whenever he talked about it he got that abstracted look that I get trying to explain various technical things to people. But anyway, I DID manage to confirm from him that both REST and SOAP-based webservices were SOA. Not sure if that helps narrow it down though ;)
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