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From Apache Wiki <wikidi...@apache.org>
Subject [Ws Wiki] Update of "Tuscany/TuscanyJava/DAS Java Overview/RDBDAS Java User Guide/OCC" by KevinWilliams
Date Thu, 05 Oct 2006 22:41:21 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Ws Wiki" for change notification.

The following page has been changed by KevinWilliams:
http://wiki.apache.org/ws/Tuscany/TuscanyJava/DAS_Java_Overview/RDBDAS_Java_User_Guide/OCC

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- The RDB DAS is intended for use in disconnected scenarios.  When the DAS returns a graph
of SDO !DataObjects as the result of a query, there are no locks held on the  underlying database.
 Though locks are not held, the DAS does employ a mechanism called [http://en.wikipedia.org/wiki/Optimistic_locking
Optimistic Concurrency Control] to manage concurrency.
+ The RDB DAS is intended for use in disconnected scenarios.  When the DAS returns a graph
of SDO !DataObjects as the result of a query, there are no locks held on the  underlying database
and the data is no longer associated with any database connection or transaction.  Though
locks are not held, the DAS does employ a mechanism called [http://en.wikipedia.org/wiki/Optimistic_locking
Optimistic Concurrency Control] to manage concurrency.
  

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