Chapter 1. A case for a Neo4j database
Figure 1.1. Users and their friends represented as a graph data structure
Figure 1.2. SQL diagram of tables representing user and friend data
Figure 1.3. Traversing the social network graph data
Chapter 2. Data modeling in Neo4j
Figure 2.1. Users and groups in an RDBMS with a join table
Figure 2.2. A person belongs to a group.
Figure 2.3. Three people in two groups
Figure 2.4. The entities in an access control system
Figure 2.5. Relationships between entities in the access control system
Figure 2.6. The access control model extended to support subgroups
Figure 2.7. A User with some properties
Figure 2.8. The user with some nodes converted to properties
Figure 2.9. Two users with different relationships to the same address
Figure 2.10. Two users with differently qualified relationships to the same address
Figure 2.11. Reifying the relationship between a User and an Address in order to introduce other participants
Figure 2.12. A User with additional properties stored in a related UserEx node
Figure 2.13. Two underground stations, with the connection between them reified as a single Track Section
Figure 2.14. Two underground stations, with connections on two different lines
Figure 2.15. A simple model showing band members and a recorded album
Figure 2.16. A more complex model showing two different lineups of the same band
Chapter 3. Starting development with Neo4j
Figure 3.1. Users in a social network represented as boxes