Comments on: What Standards for Object Databases? http://www.odbms.org/blog/2007/12/what-standards-for-object-databases/ Trends and Information on New Data Management Technologies, Innovation. Sat, 04 Feb 2012 22:54:13 +0000 hourly 1 http://wordpress.org/?v=3.1.1 By: Daniel http://www.odbms.org/blog/2007/12/what-standards-for-object-databases/comment-page-1/#comment-91 Daniel Sat, 05 Jan 2008 13:27:26 +0000 http://www.odbms.org/odbmsblog/2007/12/19/what-standards-for-object-databases/#comment-91 In reply to the original comments:<br /><br />I don't think it's true that most of the original OODB systems didn't<br />support query optimization or transactions. It depends a bit on what<br />you mean by "original", but if you mean the generation of companies<br />that appeared in 1988, I don't think it's true. ObjectStore<br />absolutely always supported ACID transactions. It also had a query<br />optimizer, albeit a simple one, without any impendence mismatch.<br /><br />You say that relational data maps fairly well to objects, but there<br />are a lot of big problems, which have been written about at great<br />length. For example, it is difficult to model inheritance in<br />relational databases. This is not a "fine point"; it's crucial. In reply to the original comments:

I don’t think it’s true that most of the original OODB systems didn’t
support query optimization or transactions. It depends a bit on what
you mean by “original”, but if you mean the generation of companies
that appeared in 1988, I don’t think it’s true. ObjectStore
absolutely always supported ACID transactions. It also had a query
optimizer, albeit a simple one, without any impendence mismatch.

You say that relational data maps fairly well to objects, but there
are a lot of big problems, which have been written about at great
length. For example, it is difficult to model inheritance in
relational databases. This is not a “fine point”; it’s crucial.

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