Neo4j Data Model

Neo4j Database follows the Property Graph Model for storing and managing its data. Neo4j is a graph database which contains the following features of Property Graph Model.

• The Graph model contains Nodes, Relationships and Properties which specifies data and its operation.
• Properties are key-value pairs.
• Nodes are represented using circle and Relationships are represented using arrow keys. Relationship specifies the relation between two nodes.
• There are two types of relationships between nodes according to their directions: Unidirectional and Bidirectional
• Each Relationship contains two nodes: "Start Node" or "From Node" and "To Node" or "End Node".
• Both Nodes and Relationships contain properties.

Relationships should be directional in Property Graph Data Mode. If you create a relationship without a direction, it will through an error message.

There are three main building block of a GraphDB Data model:

• Nodes
• Relationship
• Properties

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