Today, network and sensor device technologies are progressing
rapidly. We can easily obtain real-world information
as data streams. For example, with the spread of GPS
technology, we can use location information inexpensively.
In another example, wireless sensor devices currently allow
us to monitor temperature and brightness in remote places.
To achieve query processing over such data streams, studies
on stream processing engines are becoming
more and more important. StreamSpinner, a stream
processing engine we developed, has the following features:
- Integration environment for data streams from the realworld and databases
- Event driven continuous query execution
- Novel multiple query optimization technique
- Java API for application development
