nHibernate Database Benefits and Costs?

April 11, 2008 at 12:38 pm (Object Relational Mapping, SQL Server 2005, SQL Server 2008) (, , )

I posted this question over at SQL Server Central, just like my last post, I’m also posting it here. I need some help. I’ve been trying to research this and I can’t find good, hard facts. Any help would be deeply appreciated.

It looks like we might be facing a large project shifting over to using ORM methods through nHibernate. I’m trying to get a read from the database community on what exactly I should expect in terms of issues, challenges and headaches during the development process. I’m also interested in any long term maintenance issues, troubleshooting problems, etc. If your developers implemented ORM all the way down to storing object data on the database in a non-normalized/object oriented fashion, how did that affect you? Did it muck up reporting? What benefits did you realize on the database side of the house? I’m really as interested in benefits as I am costs.

I’m really looking for real-world, hands on information. Complaints or speculation about how stupid a lowest common denominator set of dynamic queries might be… well, I’ve got that complaint well in hand. I need as much hard data as I can collect so that I communicate enough information to my boss, his boss and his boss in order for them to make informed decisions about this and go into it with their eyes fully pinned open.

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