Can someone please enlight me about these SDO things?

I've worked in a project a year ago where i used IBM RAD with JSF and
SDO Relational Records and Relational Record Lists. At that time i
searched the web for material and found almost nothing valuable, but i
did got the impression that SDO was a "proprietary" technology that
IBM and Oracle and a few other minor players decided to implement
without the approval of the JCP/Sun and so it was not part of J2EE.

I did found the technology to be very interesting, but due to the lack
of support and information (among other factors) the work did not went
well and was interrupted in the middle.

Now, one year after, i suggested again the use of IBM RAD with JSF and
SDO in a shop that works almost exclusively with IBM technologies.
Despite my bad experience with it. But i found that the information
and support still doesn't practically exist.

However, now i found references to SDO not only with IBM and Oracle,
but also in relation to some other vendors, PHP, and more confusing
with Eclipse and Apache... Oh, and OSOA too..

So my question is, is all these SDO the same thing? Are IBM and Oracle
and Eclipse and Apache developing the same thing in different ways?
Did they all centralized the development in Apache? If so, IBM RAD
have older versions of SDO or their own implementation?


I think it's all too confusing...


--
Melhores cumprimentos / Best regards
António Santos Mota

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