Comments on: Do we still have an impedance mismatch problem? – Interview with José A. Blakeley and Rowan Miller. http://www.odbms.org/blog/2012/05/do-we-still-have-an-impedance-mismatch-problem-interview-with-jose-a-blakeley-and-rowan-miller/ Trends and Information on Big Data, New Data Management Technologies, Data Science and Innovation. Mon, 03 Nov 2014 17:39:20 +0000 hourly 1 http://wordpress.org/?v=4.2.4 By: Evgeniy Grigoriev http://www.odbms.org/blog/2012/05/do-we-still-have-an-impedance-mismatch-problem-interview-with-jose-a-blakeley-and-rowan-miller/#comment-149 Wed, 30 May 2012 19:36:52 +0000 http://www.odbms.org/blog/?p=1456#comment-149 Thank you for the great interview.

It clearly shows that IM problem is considered as technological problem mainly.
In fact IM is not generl problem but just consequenece of evolution of programm languages and DBMS. They try to resolve the special situation (very usual but not general one) but they don’t understant that different situations are possible.

]]>
By: David Ingersoll http://www.odbms.org/blog/2012/05/do-we-still-have-an-impedance-mismatch-problem-interview-with-jose-a-blakeley-and-rowan-miller/#comment-148 Tue, 22 May 2012 15:55:23 +0000 http://www.odbms.org/blog/?p=1456#comment-148 I usually don’t comment, but I have to say something since the above is filled with just plain wrong statements, which is surprising given Jose’s background. To correct Jose’s statement on “they didn’t have strong, well-engineered support for transactions.” he might be interested to know that Sabre’s Air Inventory system runs on Versant’s Object Database and per them is the 3rd largest transactional system in the world. The others still run on TPF, which is not relational. Also, Versant has a bit of knowledge regarding ORM technology, in fact we had a .Net ORM solution when Microsoft was still thinking about LINQ and EF. They had the chance to purchse it back in 2005, but it was spun off as Vanatec which is now Teleric Open Access for .Net. I will give Kudo’s to LINQ, which both db4o and Versant suppor as it’s interface. Maybe Microsoft one day will realize that SQL Server is not the hammer for everything, SAP (Sybase),Oracle and IBM have multiple database solutions, key value, in memory etc… I think there were many reason’s that Object Databases didn’t become the next big thing, but history has a way of repeating itself (NoSQL), or perhaps I am the eternal optimist. One thing is that Versant’s customer have no impedence mismatch and are doing some awesome things. That is all I am going to say about that!

]]>