Graph databases, such as Neo4j and OrientDB, model data as a collection of vertices (also called nodes) linked together by one or more edges (also called relationships or links). In real-world graph implementations, vertices are often used to represent real-world entities such as individuals, organizations, vehicles, and addresses. Edges are then used to represent relationships between vertices.
Both vertices and edges can have an arbitrary number of key-value pairs, called properties, associated with them. For example, properties associated with an individual vertex may include a name and date of birth. Properties associated with an edge linking an individual vertex with another individual vertex may include the nature and ...
