Active database systems

Paton, Norman W.; Díaz, Óscar

doi:10.1145/311531.311623

Cited by 415 publications

(247 citation statements)

References 26 publications

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“…In this case, the sequence of checking the related triggers' firing conditions is important [36]. An example of recursive trigger firing is as follows.…”

Section: Checking the Related Triggers' Firing Conditions And Firing mentioning

confidence: 99%

“…Active database systems [36] use event-condition-action rules [14] for multiple purposes, such as maintaining the integrity of the information in the databases. Typically, an event-condition-action rule is a SQL trigger [13] of the form On triggering event E if firing condition C do action A, meaning that when the triggering event E occurs and the firing condition C is satisfied, the action A will be taken.…”

Section: Database Triggersmentioning

confidence: 99%

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Triggers and Monitoring in Intelligent Personal Health Record

Luo¹

2011

J Med Syst

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Although Web-based personal health records (PHRs) have been widely deployed, the existing ones have limited intelligence. Previously, we introduced expert system technology and Web search technology into the PHR domain and proposed the concept of an intelligent PHR (iPHR). iPHR provides personalized healthcare information to facilitate users' daily activities of living. The current iPHR is passive and follows the pull model of information distribution. This paper introduces triggers and monitoring into iPHR to make iPHR become active. Our idea is to let medical professionals pre-compile triggers and store them in iPHR's knowledge base. Each trigger corresponds to an abnormal event that may have potential medical impact. iPHR keeps collecting, processing, and analyzing the user's medical data from various sources such as wearable sensors. Whenever an abnormal event is detected from the user's medical data, the corresponding trigger fires and the related personalized healthcare information is pushed to the user using natural language generation technology, expert system technology, and Web search technology.

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“…In this case, the sequence of checking the related triggers' firing conditions is important [36]. An example of recursive trigger firing is as follows.…”

Section: Checking the Related Triggers' Firing Conditions And Firing mentioning

confidence: 99%

Section: Database Triggersmentioning

confidence: 99%

Triggers and Monitoring in Intelligent Personal Health Record

Luo¹

2011

J Med Syst

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“…To react on a specific entity state, it is necessary to define a context rule inside the entity. Context rules define an ECA (Event-Condition-Action) matching service [3], as it is already known from active database research [7].…”

Section: "A Context Rule Specifies the Reaction Of An Entity On A Spementioning

confidence: 99%

Modeling Context-Aware Behavior by Interpreted ECA Rules

Beer

Christian

Ferscha

et al. 2003

Euro-Par 2003 Parallel Processing

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Abstract. The software architecture of distributed systems is about to change due to new requirements of modern mobile devices. New network techniques, like ad-hoc radio communication or peer-to-peer networks allow mobile devices to sense their environment and to interact with other devices dynamically. This paper presents a cutting-edge way to describe objects and their interaction, also called context, as well as the possibility to configure such interaction scenarios. A lookup mechanism collects information about the environment and a rolebased classification is responsible for identifying possible interaction partners. Furthermore the configuration of scenario behavior with context rules is introduced. Finally a comparison with already existing context frameworks is given and a practical emergency scenario configuration is shown.

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“…Up to now ECA rules have been mainly used in central active database systems [2,5,6]. Simple variants of ECA rules have been integrated into SQL:99 and are available in some object-relational database systems.…”

Section: The Eca Mechanism and Its Enhancement For Distributed Activementioning

confidence: 99%

“…Active database systems [2,5,8] can react to occurring events using ECA rules. This ability can be used, for example, to control relationships between data objects even beyond system boundaries.…”

Section: Active Databases (Short Repetition)mentioning

confidence: 99%

Enhancing ECA Rules for Distributed Active Database Systems

Heimrich

Specht

2003

Web, Web-Services, and Database Systems

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Abstract. ECA (event/condition/action) rules have been developed for central active database systems. In distributed active database systems the problem of inaccessibility of partial systems raises and thus the undecidability of ECA conditions referring to remote systems. This work proposes an enhancement of ECA rules for distributed active database systems to react also in the case of inaccessibility and undecidability. Therefore, the ECA evaluation will be enhanced to a strict function with the inaccessibility state Ω and a new alternative action AA enriches the classical ECA rules. The advantages and the usage of this approach are shown by an example of maintaining data consistency in distributed active database systems.

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Active database systems

Cited by 415 publications

References 26 publications

Triggers and Monitoring in Intelligent Personal Health Record

Triggers and Monitoring in Intelligent Personal Health Record

Modeling Context-Aware Behavior by Interpreted ECA Rules

Enhancing ECA Rules for Distributed Active Database Systems

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