Situation monitoring for active databases
VLDB '89 Proceedings of the 15th international conference on Very large data bases
Event specification in an active object-oriented database
SIGMOD '92 Proceedings of the 1992 ACM SIGMOD international conference on Management of data
Maintaining views incrementally
SIGMOD '93 Proceedings of the 1993 ACM SIGMOD international conference on Management of data
Temporal conditions and integrity constraints in active database systems
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
Algorithms for deferred view maintenance
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
Temporal aggregation in active database rules
SIGMOD '97 Proceedings of the 1997 ACM SIGMOD international conference on Management of data
An algebraic approach to static analysis of active database rules
ACM Transactions on Database Systems (TODS)
Querying ATSQL databases with temporal logic
ACM Transactions on Database Systems (TODS)
Foundations of Databases: The Logical Level
Foundations of Databases: The Logical Level
Fundamentals of Data Warehouses
Fundamentals of Data Warehouses
Incremental Recomputation of Active Relational Expressions
IEEE Transactions on Knowledge and Data Engineering
Incremental Computation of Time-Varying Query Expressions
IEEE Transactions on Knowledge and Data Engineering
The Starburst Active Database Rule System
IEEE Transactions on Knowledge and Data Engineering
Modeling Business Rules with Situation/Activation Diagrams
ICDE '97 Proceedings of the Thirteenth International Conference on Data Engineering
Implementing Calendars and Temporal Rules in Next Generation Databases
Proceedings of the Tenth International Conference on Data Engineering
Maintenance of Discovered Association Rules in Large Databases: An Incremental Updating Technique
ICDE '96 Proceedings of the Twelfth International Conference on Data Engineering
Using Partial Differencing for Efficient Monitoring of Deferred Complex Rule Conditions
ICDE '96 Proceedings of the Twelfth International Conference on Data Engineering
The Ode Active Database: Trigger Semantics and Implementation
ICDE '96 Proceedings of the Twelfth International Conference on Data Engineering
Practical Applications of Triggers and Constraints: Success and Lingering Issues (10-Year Award)
VLDB '00 Proceedings of the 26th International Conference on Very Large Data Bases
ICDE '99 Proceedings of the 15th International Conference on Data Engineering
An Agent-Based Approach to Extending the Native Active Capability of Relational Database Systems
ICDE '99 Proceedings of the 15th International Conference on Data Engineering
On the Semantics of Complex Events in Active Database Management Systems
ICDE '99 Proceedings of the 15th International Conference on Data Engineering
| Hi-index | 0.00 |
In many intelligence and security tasks it is necessary to monitor data in database in order to detect certain events or changes. Currently, database systems offer triggers to provide active capabilities. Most triggers, however, are based on the Event-Condition-Action paradigm, which can express only very primitive events. In this paper we propose an extension of traditional triggers in which the Event is a complex situation expressed by a Select-Project-Join-GroupBy SQL query, and the trigger can be programmed to look for changes in the situation defined. Moreover, the trigger can be directed to check for changes on a periodic basis. After proposing a language to define changes, we sketch an implementation, based on the idea of incremental view maintenance, to support efficiently our extended triggers.