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Abstract | |||||||||||||||
| Important features of the STREAM system • A datastream management system (DSMS) • A declarative query language called CQL for continuous queries • Queries handling both continuous data streams and relations • Designed for changing and high data flow rates and query work load- Good resource allocation- Approximation and resource management Next- CQL CQL (Continuous Query Language) • Extension of SQL with support for sliding Windows and sampling for approximations • Supports both data streams and relations • Supports additional operators like Istream and | |||||||||||||||
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