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Getting Started with Oracle Event Processing 11g by Lloyd Williams, Robin J. Smith, Alexandre Alves

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Key elements of event stream processing

During the next few sections we will explore some of the basic principles and concepts commonly used in the creation of event-driven applications. These are the major "building blocks" for any solution that handles streaming event data.

An event

What is an event and how is it defined? Many people and technical societies define an event in many different ways, but in the context of this book, an event is an object that has a change in its state immediately, or over a period of time.

For example, let's take an everyday object, a house front door.

The door's "properties" is that it is made of wood, it has hinges, perhaps separate wooden panels, screws to keep it together, a handle or knob, and it has a color, blue. ...

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