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Digital Library of the
European Council for Modelling and Simulation |
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Title: |
Simulation Studies Of The Implementation Of Centralized Two-Phase
Locking In DDBMS |
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Authors: |
Alina Culciar, Svetlana Vasileva |
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Published in:
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(2015).ECMS 2015 Proceedings edited
by: Valeri M. Mladenov, Grisha Spasov, Petia Georgieva, Galidiya Petrova, European
Council for Modeling and Simulation. doi:10.7148/2015 ISBN:
978-0-9932440-0-1 29th
European Conference on Modelling and Simulation, Albena (Varna), Bulgaria,
May 26th – 29th,
2015 |
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Citation
format: |
Alina Culciar, Svetlana Vasileva (2015). Simulation Studies Of The Implementation Of
Centralized Two-Phase Locking In DDBMS, ECMS 2015 Proceedings edited by: Valeri M. Mladenov, Petia Georgieva, Grisha Spasov, Galidiya Petrova European Council for Modeling and Simulation. doi:10.7148/2015-0107 |
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DOI: |
http://dx.doi.org/10.7148/2015-0107 |
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Abstract: |
One of the
most important problems in distributed database systems is the concurrency
control. This paper considers algorithms simulating the implementation of centralized
two-phase locking (2PL) in distributed database systems and simulation
results. It describes specifically the simulations of two-version 2PL and 2PL
with integrated timestamp ordering mechanism. In concurrency
control method 2PL may take place deadlocks of the transactions. Therefore,
in the modeling algorithms described here are integrated algorithms for
deadlock avoiding: two-version architecture of database and timestamp
ordering strategy “wait-die”. There are also presented, the results of the
simulations of these two variants of the 2PL method at different scales of
the networks for the transmission of data and at different intensities of inflow
transactions. Modeling algorithms are developed by means of the system for
simulation modeling GPSS World Personal Version. |
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