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Joe Celko’s Complete Guide to NoSQL by Joe Celko

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Chapter 5

Streaming Databases and Complex Events

Abstract

Streaming databases use traditional structured data, but add a temporal dimension to it. If RDBMS is static data and static processing, then streaming data is moving data and active processing. It has to use a generational concurrency model to catch the flow of data. These databases do not want to respond to a query; the database is taking action. The database monitors a system or process by looking for exceptional behavior and generates alerts when such behavior occurs. When an event is observed, the system has to deliver the right information to the right consumer at the right granularity at the right time. It is personalized information delivery. From this, the consumer can decide on ...

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