very funny. I had similar skepticism until I worked in such domain. I understand the issues surrounding such a model, I spent 15 years working for Oracle. implementing it is not that trivial. there is a real need and I explain the details if I have more serious replies.<br><br><b><i>Christian Bauer <christian@hibernate.org></i></b> wrote:<blockquote class="replbq" style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"> <br>On Apr 30, 2007, at 9:48 PM, Iyad Elian wrote:<br><br>> alternative persistence model common in some domains like the medical<br>> domain. how do I go about it?<br><br>So data consistency and integrity is not important in the medical <br>domain and the EAV stuff is used as the main model for data <br>management? I can't believe that. EAV is just a synonym for "I don't <br>like to think about data management and schema evolution, therefore <br>let me break it right away in the design phase." Of course,
it has <br>its uses but it's rare to see it applied properly.<br><br>Implementing an EAV pattern on top of Hibernate is trivial. Attached <br>some source you may use if you promise never to design a system with <br>this that runs my pacemaker.<br><br></blockquote><br><p> 
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