>> What do you think? Is an ODS something that you would avoid in an
>> ideal SOA scenario? Or do you consider it a vital piece an any
>> decent company's IT environment?
>>
>> Personally, I'm still undecided. I have a strong fear of creating a
>> huge, monolithic, centralized bottleneck and maintenance issue,
>> while on the other hand I can't seem to be able to find a good "pure
>> SOA" alternative.
>
> If your ODS is a huge, monolithic, centralized bottleneck and
> maintenance issue, then by all means find a way to get rid of it.
>
Point taken; we have an ODS yet, though -- the question is whether
creating one is a good idea or not, and if it is, how to avoid its
turning into the problem I described.
> On the other hand I think trading one fad for another is not a good
> practice either. "Pure SOA" is a fad just as much, even more, than
> "ODS" was a fad a half dozen years ago.
>
> If you have a set of services working on a common set of data,
> executing business transactions, taking business measurements, and
> gauging new decisions based on recent history, then those services may
> benefit from sharing a well-defined database. Such a database may be
> considered an "operational data store" and can be done well (performs
> and is maintainable) or not.
>
> What is a well-defined ODS? Read Ralph Kimball. He always has clearly
> presented ideas based on real experience. Avoid Bill Inmon, who rode
> the DW/ODS fad like a Maui wave.
>
> For example, see http://www.dbmsmag.com/9712d05.html for some of
> Kimball's ideas on ODS.
>
Thanks for the pointer, good read.
Stefan
> I am still looking for the Ralph Kimball of SOA to emerge.
>
> -Patrick
>
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