Gray Codes for Partial Match and Range Queries
IEEE Transactions on Software Engineering
Linear clustering of objects with multiple attributes
SIGMOD '90 Proceedings of the 1990 ACM SIGMOD international conference on Management of data
Some computer science issues in ubiquitous computing
Communications of the ACM - Special issue on computer augmented environments: back to the real world
Power efficient filtering of data on air
EDBT '94 Proceedings of the 4th international conference on extending database technology: Advances in database technology
Mobile wireless computing: challenges in data management
Communications of the ACM
Computer graphics (2nd ed. in C): principles and practice
Computer graphics (2nd ed. in C): principles and practice
Broadcast disks: data management for asymmetric communication environments
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
Caching multidimensional queries using chunks
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
On selective tuning in unreliable wireless channels
Data & Knowledge Engineering
Query optimization for broadcast database
Data & Knowledge Engineering
SAIU: an efficient cache replacement policy for wireless on-demand broadcasts
Proceedings of the ninth international conference on Information and knowledge management
A Framework for Cache Management for Mobile Databases: Design and Evaluation
Distributed and Parallel Databases
Semantic query caching in a mobile environment
ACM SIGMOBILE Mobile Computing and Communications Review
Data on Air: Organization and Access
IEEE Transactions on Knowledge and Data Engineering
Generating Broadcast Programs that Support Range Queries
IEEE Transactions on Knowledge and Data Engineering
Prefetching from Broadcast Disks
ICDE '96 Proceedings of the Twelfth International Conference on Data Engineering
Semantic Data Caching and Replacement
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
Relative Prefix Sums: An Efficient Approach for Querying Dynamic OLAP Data Cubes
ICDE '99 Proceedings of the 15th International Conference on Data Engineering
Associative caching in client-server databases
Associative caching in client-server databases
Distributed group-based cooperative caching in a mobile broadcast environment
Proceedings of the 6th international conference on Mobile data management
An approach of composing near optimal invalidation reports
Proceedings of the 6th international conference on Mobile data management
Time-Critical On-Demand Data Broadcast: Algorithms, Analysis, and Performance Evaluation
IEEE Transactions on Parallel and Distributed Systems
An Error-Resilient and Tunable Distributed Indexing Scheme for Wireless Data Broadcast
IEEE Transactions on Knowledge and Data Engineering
An Energy-Efficient and Access Latency Optimized Indexing Scheme for Wireless Data Broadcast
IEEE Transactions on Knowledge and Data Engineering
Information Sciences: an International Journal
Proceedings of the 3rd International Conference on Ubiquitous Information Management and Communication
Privacy enhancement in mobile data broadcasting environments
Proceedings of the 4th International Conference on Uniquitous Information Management and Communication
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Database broadcast is an effective and scalable approach to disseminate information of high affinity to a large collection of mobile clients. A common problem of existing broadcast approaches is the lack of knowledge for a client to determine if all data items satisfying its query could be obtained from the broadcast. We therefore propose a semantic-based broadcast approach. A semantic descriptor is attached to each broadcast unit, called a data chunk. This semantic descriptor allows a client to determine if a query can be answered entirely based on broadcast items and, if needed, identify the precise definition of the remaining items in the form of a 驴supplementary驴 query. Data chunks can be of static or dynamic sizes and organized hierarchically. Their boundary can be determined on-the-fly, adaptive to the nature of client queries. We investigate different ways of organizing the data chunks over a broadcast channel to improve access performance. We introduce the data affinity index metric, which more accurately reflects client-perceived performance. A simulation model is built to evaluate our semantic-based broadcast schemes.