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Neo4j
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Neo4j is a is a free and open source Graph Database written in the Java programming language. Overview Neo4j stores data as a graph and exposes an API to the application developer for manipulation of the data graph. The data model is based around Nodes, relationships in between the nodes and properties on nodes and relationships. The relationships have types, to enable semantic traversals of the graph. The nodes do not have explicit types, instead the application programmer determine the type of the entity that the node represents based on the relationship that lead to it. Properties are values associated with a node or relationship using a string key. The value types that can be stored as properties are the Primitive data types in Java, Strings and arrays of primitive Java types or Strings. |
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