There is a large literature concerning rule engines (forward chaining or backward chaining). During the last thirty years there were various proposals such as RETE, TREAT and the derived Gator algorithm. Significantly, RETE was embedded into various expert systems such as Clips and its successor Jess, and Drools including in a number of commercial rule engines and was extended various times inc...

This paper describes a technique for the smooth integration of production rules into an active Object-Oriented Database (OODB) system that provides Event-Condition-Action (ECA) rules only, called DEVICE. The emphasis is given on the compilation of rule conditions into a discrimination network for incremental matching at run-time. The network consists of primitive, logical and complex events, th...

There is a large literature concerning rule engines (forward chaining or backward chaining). During the last thirty years there were various proposals such as RETE, TREAT and the derived Gator algorithm. Significantly, RETE was embedded into various expert systems such as Clips and its successor Jess, and Drools including in a number of commercial rule engines and was extended various times inc...

Event-condition-action (or ECA) rules are used to capture active capability. While a number of research prototypes of active database systems have been built, ECA rule capability in Relational DBMSs is still very limited. In this paper, we address the problem of turning a traditional database management system into a full-fledged active database system without changing the underlying system. Th...

The totalistic two-dimensional cellular automaton code 52 is capable of a wide variety of behavior. In this paper we look at its generic behavior, its complex behavior on simple backgrounds, its versatility in performing finite computations, and its block emulations of elementary cellular automata (ECA). In all, we found 65 ECA which are emulated by code 52. Taken together, the evidence is stro...

XML is a now a dominant standard for storing and exchanging information With its increasing use in areas such as data warehousing and e commerce there is a rapidly growing need for rule based technology to support reactive functionality on XML repositories Event condition action ECA rules automatically perform actions in response to events and are a natural facility to support such functionalit...

Transactions in areas such as real-time databases and multimedia databases not only compete, but also cooperate. We propose a model for transactions to cooperate through rules and task communication and synchronization. In our model, transactions manipulate persistent and transient data objects. With event-condition-action (ECA) rules and three additional non-ECA rules as tools, our model provi...

This article proposes a flexible way in business process modeling and managing. Today, business process needs to be more flexible and adaptable. The regulations and policies in organizations, as origins of change, are often expressed in terms of business rules. The ECA (Event-condition-action) rule is a popular way to incorporate flexibility into a process design. To raise the flexibility in th...

We study a way of coupling two configurations of the same cellular automaton rule for all elementary cellular automata (ECA). We experimentally show that there are only two possible behaviors: either synchronization for all coupling strength, or a phase transition. This transition is shown to belong to the directed percolation universality class, even for a non chaotic rule and for rules with p...

The increasing use of semistructured data technologies such as XML and RDF, in dynamic applications in areas such as data integration and e-commerce make it necessary to support reactivity over such data. Event-Condition-Action (ECA) rules are one of the technologies that can provide such functionality. In this thesis we investigate potential languages and supportive technologies that enable re...