Sökning: "ECA rules"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden ECA rules.

1. 1. ruleViz : visualization of large rule sets and composite events

   Kandidat-uppsats, Institutionen för kommunikation och information

   Författare :Johann Sigurdur Thorarinsson; [2008]
   Nyckelord :Rules; Events; ECA; Visualization; Composite events; HCI;

   Sammanfattning : Event Condition Action rule engines have been developed for some time now. Theycan respond automatically to events coming from different sources. Combination ofdifferent event types may be different from time to time and there for it is hard todetermine how the rule engine executes its rules. LÄS MER

3. 2. Using a Rule-System as Mediator for Heterogeneous Databases, exemplified in a Bioinformatics Use Case

   Magister-uppsats, Institutionen för kommunikation och information

   Författare :Anna Schroiff; [2005]
   Nyckelord :ECA rules; SCOP; PDB; databases; update propagation;

   Sammanfattning : Databases nowadays used in all kinds of application areas often differ greatly in a number of properties. These varieties add complexity to the handling of databases, especially when two or more different databases are dependent. LÄS MER

4. 3. Verifying transformations between timed automata specifications and ECA rules

   Magister-uppsats, Institutionen för datavetenskap

   Författare :Ann-Marie Ericsson; [2003]
   Nyckelord :Active rules; Timed automata; Realtime systems; Transformations;

   Sammanfattning : Event-triggered real-time systems are desirable to use in environments where the arrival of events are hard to predict. The semantics of an event-triggered system is well mapped to the behaviour of an active database management system (ADBMS), specified using event-condition-action (ECA) rules. LÄS MER

5. 4. Deriving ECA-rules from timed-automata specifications.

   Kandidat-uppsats, Institutionen för datavetenskap

   Författare :Ann-Marie Ericsson; [2002]
   Nyckelord :Active-rules; ECA; Real-time systems; Timed-automata;

   Sammanfattning : Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active databases in real-time systems introduces unpredictability in the system, e.g. LÄS MER

7. 5. Two Approaches to Event Detection in Active Database Systems

   Magister-uppsats, Institutionen för datavetenskap

   Författare :Pernilla Rönn; [2001]
   Nyckelord :Active Database Systems; D-SNOOP; O-SNOOP;

   Sammanfattning : An active database management system can react to predefined events in the database, resulting in performing some appropriate action. ECA-rules are used to capture these predefined events and to express the appropriate action in the active database management system. An event is said to be an atomic occurrence and is either primitive or composite. LÄS MER