Data processing: database and file management or data structures – Database design – Data structure types
Patent
1996-08-01
1998-06-09
Black, Thomas G.
Data processing: database and file management or data structures
Database design
Data structure types
707100, G06F 1730
Patent
active
057651604
ABSTRACT:
The disclosed invention is a computer-implemented method for registering triggers for processing at the end of each transaction occurring in a database. This method positions a class where a given object exists; and for each trigger in the class, a determination is made if the trigger is in a trigger list of an object link. If it is not, a determination is made if a given object is in an object link of a transaction. If it is not, then the given object is inserted into the object link of the transaction; and then the trigger is inserted in a list of the object link. These steps are repeated until all triggers in the class have been processed. A determination is next made if there is a superclass of the class. If yes, then a superclass, is positioned and the steps are repeated for each trigger in the superclass (i.e., polymorphic trigger). Finally, if no superclass of the class exist, then the method is exited.
REFERENCES:
patent: 5408657 (1995-04-01), Bigelow et al.
patent: 5680614 (1997-10-01), Bakuya et al.
Wang et al., "A Framework for Handling Errors During the Execution of Trigger Rules for an Active Object-Oriented DBMS", IEEE Proc. Fourth Int. Workshop on Reasearch Issues in Data Eng., pp. 132-136, Feb. 14, 1994.
Karadimice et al., "Refined Triggering Graphs: A Logic-Based Approach to Termination Analysis in Active Object-Oriented Database", IEEE Proc. of the Twelfth Int. Conf. on Data Eng., pp. 384-391, Feb. 26, 1996.
Lieuwen et al., "The Ode Active Database: Trigger Semantics and Implementation", IEEE Proc. of the Twelfth Int. Conf. on Data Eng., pp. 412-420, Feb. 26, 1996.
Black Thomas G.
Petersen Steven R.
Richebourg J. Ronald
Robinson Greta L.
Starr Mark T.
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