Stream Graph

The actual data flow of a streaming operation, consisting of a chain of stream nodes, each of which is a small software machine that applies some relational operation to its input data stream(s) to produce is output data stream(s). Nexus nodes are defined by a CREATE STREAM statement. They are freestanding nodes to which other stream graphs can connect and disconnect, in order to receive or deliver data.

For more information see Background Concepts: Stream-graphs, Nodes, and s-Server in the Administration Guide.