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Normally, you shouldn't have to worry about neo4j. Once the service is started, everything should work out of the box. You can check if neo4j is running by navigating to http://localhost:7474. If you wonder about the log-lines
Activated neo4j auto-indexing. Added property title to neo4j auto-indexing. ... Added property type to neo4j auto-indexing.that you can see when the NodeJS server starts, they initialise the necessary Neo4J indexes. By default Neo4J does not index node-properties (at least in version 1.x - this will change with version 2). To free you of the necessary configuration, this is done automatically during the movie-database startup.
To clear the database, you only need to delete the directory data/graph.db.
Please note that you should only do this once Neo4j is shut down (at the very
least, Neo4j requires a restart in order to properly work again after deleting
the directory). Also, please note that you should create the node auto index
after resetting the database (as mentioned above). A convenient way to do this
is the following bash script. It needs to be executed in your Neo4j installation
directory.
# stop the server, delete the current graph, restart it and create the auto index sudo /etc/init.d/neo4j-service stop && \ sudo rm -rf data/graph.db/ && \ sudo /etc/init.d/neo4j-service start && \ bin/neo4j-shell -c "index --create node_auto_index -t Node"