Evaluating event-generated data using append-only tables

Details Evaluating event-generated data using append-only tables Evaluating event-generated data using append-only tables

2006-12-13

2010-11-23

Trujillo, James (Department: 2159)

Data processing: database and file management or data structures

Database and file access

Preparing data for information retrieval

C707S821000, C719S318000

Reexamination Certificate

active

07840575

ABSTRACT:
Techniques are provided for evaluating base events, compound events, and logical update events in an event processing system. In one embodiment, the base events, compound events, and logical update events are definitions in a particular syntax language that specify conditions for evaluating input event data. In this embodiment, base event definitions are evaluated over the input event data; logical update event definitions are evaluated by determining whether the effect of any earlier event is changed by the arrival of a new event; and compound event definitions are evaluated over records representing events that have been selected by evaluating the base event definitions over the input event data.

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