Data Management

Consistency in a Stream Warehouse

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Executive Summary

A stream warehouse is a Data Stream Management System (DSMS) that stores a very long history, e.g. years or decades; or equivalently a data warehouse that is continuously loaded. A stream warehouse enables queries that seamlessly range from real-time alerting and diagnostics to long-term data mining. However, continuously loading data from many different and uncontrolled sources into a real-time stream warehouse introduces a new consistency problem: users want results in as timely a fashion as possible, but "Stable" results often require lengthy synchronization delays.

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