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TIBCO BusinessEvents® Enterprise Edition 6.3.1

# Simple Events

A simple event definition is a set of properties related to a given activity, while a simple event is an instance of a simple event definition.

Simple Event Definition
The simple event definition includes information for evaluation by rules, meta-data that provides context, and a separate payload — a set of data relevant to the activity. For example, suppose you are interested in monitoring the creation of new employee records. You might create a simple event definition that includes important fields from the employee record, perhaps the social security number, department, and salary. You could then write a rule to create an instance of this simple event each time a new employee record is created.
Simple Event
The simple event is an instance of a simple event definition and a record of a single activity that occurred at a single point in time.

Just as you cannot change the fact that a given activity occurred, once an event is asserted into the Rete network, you can no longer change it. (Before assertion you can use an event preprocessor to enrich the event, however.) Simple events expire when their time to live has elapsed, unless TIBCO BusinessEvents has instructions to consume them prior to that time.

- Example 1: A temperature sensor records a reading that is above a predefined limit. The payload might include the temperature-sensor ID, the reading, and the date and time. This simple event might trigger a complex event that would immediately notify a manager.
- Example 2: A customer purchases four airline tickets from San Francisco, California to San Jose, Costa Rica. The payload might include the date and time of purchase, the date and time of the flight, the purchase price, the credit card number, the flight number, the names of the four passengers, and the seat assignments. This simple event alone may include no exceptions. However, it is possible that when examined within the context of other related events, an exception may arise. For example, one or more of the passengers may have booked tickets on another flight during the same time period.

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TIBCO BusinessEvents® Enterprise Edition

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