Continuous queries over append-only databases
SIGMOD '92 Proceedings of the 1992 ACM SIGMOD international conference on Management of data
Data management for mobile computing
ACM SIGMOD Record
View maintenance issues for the chronicle data model (extended abstract)
PODS '95 Proceedings of the fourteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
DataSpace—querying and monitoring deeply networked collections in physical space
Proceedings of the 1st ACM international workshop on Data engineering for wireless and mobile access
Next century challenges: mobile networking for “Smart Dust”
MobiCom '99 Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking
Embedding the Internet: introduction
Communications of the ACM
Communications of the ACM
Wireless integrated network sensors
Communications of the ACM
Eddies: continuously adaptive query processing
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
Self-organizing data sharing communities with SAGRES
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
Directed diffusion: a scalable and robust communication paradigm for sensor networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
SEQ: A Model for Sequence Databases
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
Novel Approaches in Query Processing for Moving Object Trajectories
VLDB '00 Proceedings of the 26th International Conference on Very Large Data Bases
Alert: An Architecture for Transforming a Passive DBMS into an Active DBMS
VLDB '91 Proceedings of the 17th International Conference on Very Large Data Bases
Enhanced abstract data types in object-relational databases
The VLDB Journal — The International Journal on Very Large Data Bases
ICDE '00 Proceedings of the 16th International Conference on Data Engineering
Efficient and Adaptive Processing of Multiple Continuous Queries
EDBT '02 Proceedings of the 8th International Conference on Extending Database Technology: Advances in Database Technology
IPDPS '02 Proceedings of the 16th International Parallel and Distributed Processing Symposium
Complex Temporal Patterns Detection over Continuous Data Streams
ADBIS '02 Proceedings of the 6th East European Conference on Advances in Databases and Information Systems
Pattern Matching over Multi-attribute Data Streams
SPIRE 2002 Proceedings of the 9th International Symposium on String Processing and Information Retrieval
Publish/Subscribe Tree Construction in Wireless Ad-Hoc Networks
MDM '03 Proceedings of the 4th International Conference on Mobile Data Management
Energy-Optimal and Energy-Balanced Sorting in a Single-Hop Wireless Sensor Network
PERCOM '03 Proceedings of the First IEEE International Conference on Pervasive Computing and Communications
A Distributed System for Answering Range Queries on Sensor Network Data
PERCOMW '05 Proceedings of the Third IEEE International Conference on Pervasive Computing and Communications Workshops
Energy-Efficient Data Organization and Query Processing in Sensor Networks
ICDE '05 Proceedings of the 21st International Conference on Data Engineering
Context for Ubiquitous Data Management
UDM '05 Proceedings of the International Workshop on Ubiquitous Data Management
Wireless Sensor Networks: From Data to Context to Energy Saving
UDM '05 Proceedings of the International Workshop on Ubiquitous Data Management
Towards an Autonomic Peer-to-Peer Middleware for Wireless Sensor Networks
ATC '08 Proceedings of the 5th international conference on Autonomic and Trusted Computing
An Energy-Efficient Query Processing Algorithm for Wireless Sensor Networks
UIC '08 Proceedings of the 5th international conference on Ubiquitous Intelligence and Computing
Scalable Ubiquitous Data Access in Clustered Sensor Networks
SSDBM '08 Proceedings of the 20th international conference on Scientific and Statistical Database Management
Efficient Processing of Continuous Join Queries Using Distributed Hash Tables
Euro-Par '08 Proceedings of the 14th international Euro-Par conference on Parallel Processing
An Energy-Efficient Query Aggregation Scheme for Wireless Sensor Networks
ADHOC-NOW '08 Proceedings of the 7th international conference on Ad-hoc, Mobile and Wireless Networks
MMNS '08 Proceedings of the 11th IFIP/IEEE international conference on Management of Multimedia and Mobile Networks and Services: Management of Converged Multimedia Networks and Services
EQOWSN: Evolutionary-based query optimization over self-organized wireless sensor networks
Expert Systems with Applications: An International Journal
A Framework for Semantic Sensor Network Services
ICSOC '08 Proceedings of the 6th International Conference on Service-Oriented Computing
Epidemiology and Wireless Communication: Tight Analogy or Loose Metaphor?
Bio-Inspired Computing and Communication
Three Approximation Algorithms for Energy-Efficient Query Dissemination in Sensor Database System
DEXA '09 Proceedings of the 20th International Conference on Database and Expert Systems Applications
An Optimization Technique for Multiple Continuous Multiple Joins over Data Streams
DEXA '09 Proceedings of the 20th International Conference on Database and Expert Systems Applications
An Algorithm for Treating Uncertainties in the Visualization of Pipeline Sensors' Datasets
IVIC '09 Proceedings of the 1st International Visual Informatics Conference on Visual Informatics: Bridging Research and Practice
Space-optimal heavy hitters with strong error bounds
ACM Transactions on Database Systems (TODS)
Energy-efficient processing of spatio-temporal queries in wireless sensor networks
Proceedings of the 18th SIGSPATIAL International Conference on Advances in Geographic Information Systems
Meeting ecologists' requirements with adaptive data acquisition
Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems
ADBIS'10 Proceedings of the 14th east European conference on Advances in databases and information systems
SNEE: a query processor for wireless sensor networks
Distributed and Parallel Databases
IEA/AIE'10 Proceedings of the 23rd international conference on Industrial engineering and other applications of applied intelligent systems - Volume Part III
Improving validity of query answering in dynamic systems
Proceedings of the Third International Workshop on Reliability, Availability, and Security
From biological and social network metaphors to coupled bio-social wireless networks
International Journal of Autonomous and Adaptive Communications Systems
Towards declarative query scoping in sensor networks
From active data management to event-based systems and more
Wireless machine monitoring embodiment using mobile computing
ACAI '11 Proceedings of the International Conference on Advances in Computing and Artificial Intelligence
Querying sensor data for environmental monitoring
International Journal of Sensor Networks
An autonomous intelligent gateway infrastructure for in-field processing in precision viticulture
Computers and Electronics in Agriculture
Knowledge acquisition from sensor data in an equine environment
DaWaK'11 Proceedings of the 13th international conference on Data warehousing and knowledge discovery
The Maximum Box Problem for moving points in the plane
Journal of Combinatorial Optimization
Proceedings of the 9th ACM Conference on Embedded Networked Sensor Systems
Contory: a middleware for the provisioning of context information on smart phones
Middleware'06 Proceedings of the 7th ACM/IFIP/USENIX international conference on Middleware
Declarative support for sensor data cleaning
PERVASIVE'06 Proceedings of the 4th international conference on Pervasive Computing
In-Network processing of nearest neighbor queries for wireless sensor networks
DASFAA'06 Proceedings of the 11th international conference on Database Systems for Advanced Applications
Communication-Efficient implementation of range-joins in sensor networks
DASFAA'06 Proceedings of the 11th international conference on Database Systems for Advanced Applications
Database-centric programming for wide-area sensor systems
DCOSS'05 Proceedings of the First IEEE international conference on Distributed Computing in Sensor Systems
Data sampling control and compression in sensor networks
MSN'05 Proceedings of the First international conference on Mobile Ad-hoc and Sensor Networks
An energy consumption estimation model for disseminating query in sensor networks
MSN'05 Proceedings of the First international conference on Mobile Ad-hoc and Sensor Networks
ETRI-QM: reward oriented query model for wireless sensor networks
EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
In-Network join processing for sensor networks
APWeb'06 Proceedings of the 8th Asia-Pacific Web conference on Frontiers of WWW Research and Development
Answering range-aggregate queries over objects generating data streams
DASFAA'10 Proceedings of the 15th international conference on Database Systems for Advanced Applications - Volume Part II
Communication-Efficient implementation of join in sensor networks
DASFAA'05 Proceedings of the 10th international conference on Database Systems for Advanced Applications
Review: Real-time data management on wireless sensor networks: A survey
Journal of Network and Computer Applications
The anatomy of a stream processing system
BNCOD'06 Proceedings of the 23rd British National Conference on Databases, conference on Flexible and Efficient Information Handling
ICB-index: a new indexing technique for continuous time sequences
ADBIS'06 Proceedings of the 10th East European conference on Advances in Databases and Information Systems
Phenomenon-aware sensor database systems
EDBT'06 Proceedings of the 2006 international conference on Current Trends in Database Technology
Using temporal semantics for live media stream queries
EDBT'06 Proceedings of the 2006 international conference on Current Trends in Database Technology
Data management support for notification services
Data Management in a Connected World
Model-Aided metadata management for wireless sensor networks
GPC'06 Proceedings of the First international conference on Advances in Grid and Pervasive Computing
SMART: Stream Monitoring enterprise Activities by RFID Tags
Information Sciences: an International Journal
ALGOSENSORS'06 Proceedings of the Second international conference on Algorithmic Aspects of Wireless Sensor Networks
Online packet admission and oblivious routing in sensor networks
ISAAC'06 Proceedings of the 17th international conference on Algorithms and Computation
Proactive context-aware sensor networks
EWSN'06 Proceedings of the Third European conference on Wireless Sensor Networks
ICDCN'12 Proceedings of the 13th international conference on Distributed Computing and Networking
Business-management-inspired sensor data fusion
Proceedings of the 1st International Conference on Wireless Technologies for Humanitarian Relief
Query optimization with value path materialization in column-stored DWMS
Proceedings of the 3rd International Conference on Computing for Geospatial Research and Applications
Database system performance evaluation models: A survey
Performance Evaluation
Middleware for pervasive computing: A survey
Pervasive and Mobile Computing
Sensor streams middleware for easy configuration and processing in hybrid sensor network
Proceedings of the 28th Annual ACM Symposium on Applied Computing
Virtual Tree: A robust architecture for interval valid queries in dynamic distributed systems
Journal of Parallel and Distributed Computing
Efficient algorithm for serial data fusion in wireless sensor networks
Proceedings of the 16th ACM international conference on Modeling, analysis & simulation of wireless and mobile systems
TWINS: Efficient time-windowed in-network joins for sensor networks
Information Sciences: an International Journal
Simulation framework for real-time database on WSNs
Journal of Network and Computer Applications
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Sensor networks are being widely deployed for measurement, detection and surveillance applications. In these new applications, users issue long-running queries over a combination of stored data and sensor data. Most existing applications rely on a centralized system for collecting sensor data. These systems lack flexibility because data is extracted in a predefined way; also, they do not scale to a large number of devices because large volumes of raw data are transferred regardless of the queries that are submitted. In our new concept of sensor database system, queries dictate which data is extracted from the sensors. In this paper, we define the concept of sensor databases mixing stored data represented as relations and sensor data represented as time series. Each long-running query formulated over a sensor database defines a persistent view, which is maintained during a given time interval. We also describe the design and implementation of the COUGAR sensor database system.