Automatic generation of production rules for integrity maintenance
ACM Transactions on Database Systems (TODS)
A structured approach for the definition of the semantics of active databases
ACM Transactions on Database Systems (TODS)
Semantics and expressiveness issues in active databases (extended abstract)
PODS '95 Proceedings of the fourteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Temporal conditions and integrity constraints in active database systems
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
PODS '99 Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Journal of Intelligent Information Systems
Updating and Querying Databases that Track Mobile Units
Distributed and Parallel Databases - Special issue on mobile data management and applications
Indexing moving points (extended abstract)
PODS '00 Proceedings of the nineteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
A data model and data structures for moving objects databases
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
Indexing the positions of continuously moving objects
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
A foundation for representing and querying moving objects
ACM Transactions on Database Systems (TODS)
Active Rules in Database Systems
Active Rules in Database Systems
Active Database Systems: Triggers and Rules for Advanced Database Processing
Active Database Systems: Triggers and Rules for Advanced Database Processing
IEEE Transactions on Computers
The Starburst Active Database Rule System
IEEE Transactions on Knowledge and Data Engineering
Locating Objects in Mobile Computing
IEEE Transactions on Knowledge and Data Engineering
The Geometry of Uncertainty in Moving Objects Databases
EDBT '02 Proceedings of the 8th International Conference on Extending Database Technology: Advances in Database Technology
Formal Characterizations of Active Databases: Part II
DOOD '97 Proceedings of the 5th International Conference on Deductive and Object-Oriented Databases
Modeling and Querying Moving Objects
ICDE '97 Proceedings of the Thirteenth International Conference on Data Engineering
Cost and Imprecision in Modeling the Position of Moving Objects
ICDE '98 Proceedings of the Fourteenth International Conference on Data Engineering
O-O, What Have They Done to DB2?
VLDB '99 Proceedings of the 25th International Conference on Very Large Data Bases
Real-Time Traffic Updates in Moving Objects Databases
DEXA '02 Proceedings of the 13th International Workshop on Database and Expert Systems Applications
Nearest Neighbor and Reverse Nearest Neighbor Queries for Moving Objects
IDEAS '02 Proceedings of the 2002 International Symposium on Database Engineering & Applications
Specifications for Efficient Indexing in Spatiotemporal Databases
SSDBM '98 Proceedings of the 10th International Conference on Scientific and Statistical Database Management
On the Generation of Spatiotemporal Datasets
SSD '99 Proceedings of the 6th International Symposium on Advances in Spatial Databases
Capturing the Uncertainty of Moving-Object Representations
SSD '99 Proceedings of the 6th International Symposium on Advances in Spatial Databases
A Spatiotemporal Model and Language for Moving Objects on Road Networks
SSTD '01 Proceedings of the 7th International Symposium on Advances in Spatial and Temporal Databases
Spatial queries in dynamic environments
ACM Transactions on Database Systems (TODS)
Indexing of Moving Objects for Location-Based Services
ICDE '02 Proceedings of the 18th International Conference on Data Engineering
Personal Service Areas for Mobile Web Applications
IEEE Internet Computing
Context-aware optimization of continuous range queries maintenance for trajectories
Proceedings of the 4th ACM international workshop on Data engineering for wireless and mobile access
Dynamic topological predicates and notifications in moving objects databases
Proceedings of the 6th international conference on Mobile data management
On-line data reduction and the quality of history in moving objects databases
MobiDE '06 Proceedings of the 5th ACM international workshop on Data engineering for wireless and mobile access
Location-dependent query processing: Where we are and where we are heading
ACM Computing Surveys (CSUR)
| Hi-index | 0.00 |
This work addresses the problem of maintaining the consistency of the answers to continuous queries which are posed by the users of the Moving Objects Databases (MOD). Assuming that the motion of the object is represented by a trajectory, we focus on the effect that the modifications to the trajectory data can have on the queries answer-set. In case a mobile user enters a road section in which an accident has occurred, which was not anticipated in the "expected" traffic behavior, not only his trajectory needs to updated, but the answer to the query that he posed may need to be recalculated and transmitted again. In this work we propose a framework which enables detecting and processing the pending queries whose answers need to be re-evaluated upon modifications to the MOD. We identify the relevant syntactic elements which can be extracted from the user's queries and we analyze their semantic implications. We also propose an architecture of a system that can be used for this task. We demonstrate how triggers can be used to maintain the answers to the users' queries "up to date" with respect to the modifications to the MOD and we show that our framework can be implemented on top of the existing ORDBMS.