Talk:Object–role modeling

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Link to Entity-Relationship modeling

I restored the following text in the history section which relates OBR to ER:

Another conceptual approach is provided by Entity-Relationship modeling (ER).[4] Although ER models can be useful once the design process is finished, they are less suitable for formulating, transforming or evolving a design. ER diagrams are further removed from natural language, cannot be populated with fact instances, require complex design choices about attributes, lack the expressibility and simplicity of a role-based notation for constraints, hide information about the semantic domains which glue the model together, and lack adequate support for formal transformations.[3]

Now the section was removed twince by 118.67.22.34 with other explaination:

Text about ER modelling here does is related to ORM
Halpin's Work at Microsoft was self published at Microsoft, and constitutes 'original research'.

Now both arguments make no sense to me. Terry Halpin is a notable scientist, who is suppost to create original research. It doesn't really matter much where he published his work. So if there is something wrong with the text please explain first. -- Marcel Douwe Dekker (talk) 11:07, 22 October 2008 (UTC)[reply]

I have remove the questionable text here for now (which I added myself) and will try to find an other scientist to explain the relationship. -- Marcel Douwe Dekker (talk) 02:14, 27 October 2008 (UTC)[reply]