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Deadlock is one of the most serious problems in multitasking concurrent programming systems. The deadlock problem becomes further complicated when the underlying system is distributed and when tasks have timing constraints. Deadlock detection and optimization is very difficult in a distributed database system because no controller has complete and current information about the system and data dependencies. The deadlock problem is intrinsic to a distributed database system which employs lockingdoi:10.1109/dsde.2010.41 dblp:conf/dsde/AlomHH10 fatcat:nzlifnrw2vbwfmh4vywt54jdfa