What is a graph database?

A graph database is a database that uses a graph structure. This database uses nodes and edges (relationships) to represent and store data. Each node represents an entity (such as a biological entity), and each edge represents a connection or relationship between two nodes. The key concept of this system is a graph structure (organized by nodes and edges) for connections among the stored data. The graph database is more expressive and significantly simpler than traditional relational databases and other NoSQL databases and is very useful for situations with heavily interconnected data. Especially, the graph…

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