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[protege-discussion] Transaction Support in Protege Frames

Tania Tudorache tudorache at
Wed Aug 4 14:15:52 PDT 2010

Yes, Protege API has support for transactions. When using the database 
backend, Protege uses the transaction mechanism in the database engine, 
and rollback works properly. However, for the file backend the support 
for transactions is not so robust. It uses the UndoFramestore to keep 
track of all operations, and knows how to roll them back. Even though, 
this may work for most cases, if you want real transaction support, it 
is better to use the database backend.


On 07/27/2010 01:52 PM, Ron Schultz wrote:
> I see in configuration files and Subversion mention made of 
> 'transaction support' or 'transaction isolation' for Protege. Is this 
> support similar to that provided by a database - or is this something 
> different? Does this imply some form of locking and a rollback 
> mechanism? Is this support provided for a file-based backend also?
> Thanks
> -- 
> Ron
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