Differences between Hibernate and NHibernate

Most features of Hibernate 2.1 are present in the 1.0.1 release of NHibernate.

Unimplemented features:

• Databinder - never requested by our users, so we consider it a low priority feature.
• SchemaUpdate - too complicated to implement, we will accept a patch if anybody decides to implement SchemaUpdate on their own.
• ScrollableResults - requires scrolling support from the underlying result set object. ADO.NET IDataReaders do not support scrolling.
• SqlExceptionConverter

Extra features (from Hibernate 3):

• fetch="join/select" attribute, equivalent to outer-join="true/false"
• unsaved-value guessing - NHibernate will try to guess unsaved-value for <id> and <version> if none is specified in the mapping file.

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