A business event is a message that contains information about an actual
business event that occurred. Many business systems produce streams of such events as things happen.
Examples of business events that are often transmitted as streams of event
messages include:
- Financial market data feeds that transmit trade and quote events,
where each event may consist of ticket symbol, price, quantity, time, and so
on
- Radio Frequency Identification System (RFID) sensors that
transmit events indicating that an RFID tag was sensed nearby
- Click streams, which transmit a message (a click event) each
time a user clicks a link, button, or control on a Web site
- Database transaction events, which occur each time a record is
added to a database or updated in a database