I think that it is beneficial to differentiate two levels of reuse: SW level and Service level. SW reuse is SW implemented functionalities and best technology...
... I always wonder how some folks can be so sure. I've read and talked and occasionally written about SOA for a few years now, but I'm still not sure I know...
I'm finding the same answer. According to Gartner, it was Yefim Natis of Gartner, see: http://www.gartner.com/resources/114300/114358/114358.pdf Jeff ... ...
Didn't he invent "SOA 2.0" as well? Is there no limit to this man's taxonomical creativity?:) Actually I think it is almost impossible to find a truthful...
... That is because SOA is not an architectural style but a domain model design approach. It it was an architectural style, one would be able to enumerate its ...
I have just set up a table in the Database Section for companies offering SOA consutltancy, design and development services. If you would like to enter a...
I am taking a risk to cause a wave of critics on my head but in a few words I would outline that SOA IS AN IMPLEMENTATION OF BUSINESS SERVICES AND PROCESSES...
Stefan is the first to register his services on this list. Apparently although his written English is excellent, he has such a heavy German accent that,even...
<Jan Algermissen> That is because SOA is not an architectural style but a domain model Design approach. It it was an architectural style, one would be able to ...
Hi, I thought it might be of interest here to note that Atom/APP just made another step towards computer to computer scenarios. Don't draw false conclusions...
Hey Mark, what are you talking about? It's likely that, at some point, a service evolves in such a way that requires interface change. It's not a failure, it's...
<<Oracle and SAP are immense companies that are channeling more of their massive muscle into SOA. They recognize that SOA will eventually be both a threat and...
... architecture@yahoogroups.com, "jeffrschneider" <jeffrschneider@...> ... new ... internal ... I think the question has two answers - if the changes impact...
<<In fact, so do most other modern software applications, though this may be less obvious at first sight. To a modern software developer, it is hard to...
There have been many interesting, challenging ands often `deep' comments on SOA in these pages, with many more technical than I am able to follow. However...
I don't see this an issue if SOA is built on Component technology. Since f(x) is implemented at the level of Component and if a change of f(x) does not change...
I think that it is helpful to apply Herbert Simon's Hierarchy theory where lower levels are more stable than higher levels. I see four gross levels, data ...
Radovan - I think you and I agreed to disagree long ago on whether or not the data format constituted part of the interface. That said, I agree it's valuable...
... I think that interface based access is a key feature of a well designed SOA. There must be an interface (like or implementation) description which properly...
I think that as soon as the SLAs and contracts (think WSDLs) do not change then no need of a new version of the service. Very general interfaces could be a...
Stanley, ... General != ambiguous. General means that f() can undergo significant change without needing to change the interface. Consider if f() were a stock...
I am surprised this blog of Keith's has not provoked a reaction from anyone in this Group. Am I to take it that you are all broadly in accord? Gervas ... ...
Hi all, We are finalizing the Javapolis ( http://www.javapolis.com ) conference agenda and we are missing speakers on these 3 topics: - SOA Governance - XML...
Hi Gervas, Didn't see it.Thanks. [BTW I wrote about this way back in November: http://www.ipbabble.com/2005/11/services_the_death_of_objects.html] I think...
I agree that General != ambiguous and all was fine until you described the example of yours IMHO, if you change GetStockQuote from real-time to delayed then...
... After re-reading Keith's article, this sentence from William begins to sum up my opinion. As I tend to do, I take a middle of the road approach. There...
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