RBE: A Rule-by-Example Active Database System

Runtime verification of programs using rule-based active system

Semi-active Control of Building Structures using Variable Stiffness Device and Fuzzy Logic

Semi-active control devices, also called “Intelligent” control devices, constitute the positive aspects of both the passive and active control devices. A semi-active control strategy is similar to the active control strategy, but this control device has been shown to be more energy-efficient than active devices. A particular type of semi-active control device, the Variable Stiffness Device (VSD...

A Database Model for Medical Consultation

The database model presented in this paper is suitable for application in which queries may require non-crisp references to certain attributes. The data item (attribute) values may be crisp or fuzzy. For instance, such adjectives as 'high' or 'normal' may be attribute values for the attribute blood pressure. A disease or a condition can be described by a number of symptoms which may be crisp al...

TBE: A Graphical Interface for Writing Trigger Rules in Active Databases

Triggers have been adopted as an important database feature and implemented by most major database vendors. Despite their diverse potential usages, one of the obstacles that hinder the triggers from their wide deployment is the lack of tools that aid users to create trigger rules. Similar to understanding and specifying database queries in SQL3, it is di cult to visualize the meaning of the wri...

Visualization of Rule Behaviour in Active Databases

One of the characteristics of database systems is the ability to efficiently handle large amounts of information. This characteristic must apply also when rules are introduced into database systems, resulting in so-called active database systems. Hence, active database systems need to manage both a large amount of data and many rules. One of the problems with large sets of rules is the complexi...