Data Stream Application Manager (DSAM)

Abstract

We present our Data Stream Application Manager (DSAM). DSAM integrates different data stream management systems (DSMS) and also sensor network nodes. The user enters a query written in a system-independent declarative query language into a central control program. DSAM analyzes this query and distributes it to the available DSMSs. The distribution algorithm uses a cost model to minimize overall processing and transmission costs. The demo shows some scenarios in which DSAM can be used. We do not focus on concrete applications but on generic use-cases where DSAM may help users or application developers. One example is switching to a different DSMS without changing queries. Another example is the automatic integration of different DSMSs to make them appear just like one system.