Summary
In this chapter, we discussed that graph databases are structures that help represent data as nodes, relationships, and properties; relationships explicitly specify and qualify the connection between two entities; labels add semantic meaning to nodes and allow for addition of indices and constraints; properties add more information to the nodes and relationships. We saw a few use cases in which graphs are used currently.
From the next chapter onward, we will delve into designing a data model and use actual Cypher queries to feed it into Neo4j. The queries used in this book are compatible with Neo4j 2.2.3. They have also been tested with Neo4j 2.3.0-M02.
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