Foundations of logic programming
Foundations of logic programming
Semantics based transaction management techniques for replicated data
SIGMOD '88 Proceedings of the 1988 ACM SIGMOD international conference on Management of data
Data caching issues in an information retrieval system
ACM Transactions on Database Systems (TODS)
The dangers of replication and a solution
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
Transactional client-server cache consistency: alternatives and performance
ACM Transactions on Database Systems (TODS)
Data-valued partitioning and virtual messages (extended abstract)
PODS '90 Proceedings of the ninth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Executive Briefing: Advances in Concurrency Control and Transaction Processing
Executive Briefing: Advances in Concurrency Control and Transaction Processing
Data Management for Mobile Computing
Data Management for Mobile Computing
EDBT '92 Proceedings of the 3rd International Conference on Extending Database Technology: Advances in Database Technology
High Throughput Escrow Algorithms for Replicated Databases
VLDB '92 Proceedings of the 18th International Conference on Very Large Data Bases
Optimizing Distributed Integrity Constraints
Proceedings of the 3rd International Conference on Database Systems for Advanced Applications (DASFAA)
Achieving Consistency in Mobile Databases through Localization in PRO-MOTION
DEXA '99 Proceedings of the 10th International Workshop on Database & Expert Systems Applications
Localization of integrity constraints in mobile databases and specification in PRO-MOTION
Mobile Networks and Applications
Replica Placement Algorithms for Mobile Transaction Systems
IEEE Transactions on Knowledge and Data Engineering
A strip-down database for modern information systems
ICCOMP'10 Proceedings of the 14th WSEAS international conference on Computers: part of the 14th WSEAS CSCC multiconference - Volume I
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As mobile devices get ubiquitous and grow in computational power, their management of interdependent data also becomes increasingly important. The mobile environment exhibits all the characteristics of a distributed database plus the feature of whimsical connectivity. Consequently, transactions respecting data consistency can suffer unbounded and unpredictable delays at both mobile and stationary nodes. The currently popular multi-tier model, in which mobile devices are in one end and always-connected stationary servers in the other, has certain practical advantages. However, it assumes that all integrity constraints are evaluated at the servers and hence relies on the semantics of operations for any autonomy enhancement of the mobile devices. In this paper, we examine the idea of constraint localization in cases where two mobile nodes each own data that share a constraint. It relies on reformulation of a constraint into more flexible local constraints that give more autonomy to the mobile nodes. The scheme also involves dynamic changes of these local constraints through negotiation, which we call re-localization. To overcome the problem of simultaneous requests for such re-localization, we give algorithms along with experimental results indicating their effectiveness.