The java org.neo4j.graphdb.GraphDatabaseService.createNode method is used to create a new node in the Neo4j graph database. This method returns a new Node object that represents the newly created node. Nodes in Neo4j are the fundamental building blocks of the graph database and can store properties as key-value pairs. They can also be connected to other nodes through relationships, forming a graph structure. The createNode method allows developers to create new nodes programmatically and start building their graph data model.
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