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Publikováno v:
IEEE Transactions on Fuzzy Systems. 11:299-310
Presents a fuzzy method for the recognition of strings of fuzzy symbols containing substitution, deletion, and insertion errors. As a preliminary step, we propose a fuzzy automaton to calculate a similarity value between strings. The adequate selecti
Publikováno v:
NCA
The virtually synchronous execution model provides an appropriate support for developing reliable applications when the crash failure model is being assumed. Using it, group broadcasts only need to be based on asynchronous communication. Synchronizat
Publikováno v:
ARES
Database replication protocols based on a certification approach are usually the best ones for achieving good performance. The weak voting approach achieves a slightly longer transaction completion time, but with a lower abortion rate. So, both techn
Autor:
R. Salinas, Francesc D. Muñoz-Escoí, José Enrique Armendáriz-Iñigo, J.R.G. de Mendivil, Josep M. Bernabé-Gisbert
Publikováno v:
2007 22nd international symposium on computer and information sciences.
One of the weaknesses of database replication protocols, compared to centralized DBMSs, is that they are unable to manage concurrent execution of transactions at different isolation levels. In the last years, some theoretical works related to this re
Publikováno v:
ARES
Middleware database replication is a way to increase availability and afford site failures for dynamic content Websites. There are several replication protocols that ensure data consistency for these systems. The most attractive ones are those provid
Autor:
José Enrique Armendáriz-Iñigo, H. Decker, J. R. Juárez, J.R.G. de Mendivil, Francesc D. Muñoz-Escoí
Publikováno v:
SAC
Several previous works have proven that there is no way of guaranteeing a snapshot isolation level in symmetrical replicated database systems without blocking transactions when they are started. As a result of this, the generalized snapshot isolation
Publikováno v:
DEXA Workshops
Middleware-based data replication is a way to increase availability, fault tolerance and performance of networked information systems without modifying the underlying DBMS core code. However, if such middleware is not properly conceived, it will intr
Autor:
Francesc D. Muñoz-Escoí, J.R.G. de Mendivil, José Enrique Armendáriz-Iñigo, J. R. Garitagoitia
Publikováno v:
AINA (2)
Middleware database replication techniques is a way to increase performance and fault tolerance without modifying the database management system (DBMS) internals. However, it introduces an additional overhead that may lead to poor response times. In
Publikováno v:
PDP
This work introduces a new distributed history-based algorithm for deadlock detection and resolution under the single-unit request model. The algorithm has a communication cost of O(n /spl middot/ log n) messages for a deadlock cycle of n processes.