Graphflow is a prototype active graph database developed by the
Data System Group (DSG) at the University of Waterloo. Graphflow
evaluates general one-time and continuous subgraph queries and
supports the property graph model. The database is implemented
in Java and provides a
Cypher++ interface, which extends the
language with subgraph-condition-action triggers.
At the core of Graphflow’s query processor are two worst-case
optimal join algorithms called Generic Join and our new Delta
Generic Join algorithm for one-time and continuous subgraph
Graphflow is available under the
Apache 2.0 license.