Neo4j

Transcript

1. Neo4j: BD de grafos Leo Soto M. (@leosoto) #DevHangout - 2015
2. Intro
3. ¿Se acuerdan de los grafos?
4. ¿Se acuerdan de los grafos? Listas ⊂ Árboles ⊂ Grafos
5. ¿Se acuerdan de los grafos? ¿BD relacionales ~= Grafos?
6. ¿Se acuerdan de los grafos? ¿BD relacionales ~= Grafos? (Y las relaciones N:M no son un hack)
7. Modelando el esquema de una BD de grafos
8. Listo. (no hay esquema, se trata de meter nodos y conectarlos)
9. ¿Preguntas?
10. ¿Preguntas? (en serio, ¿les parece que tiene sentido?)
11. Neo4j
12. Graph Nodes records data in Nodes have Properties
13. Graph Nodes records data in Nodes have Properties Nodes Relationships are organized by Relationships have Properties
14. Graph Nodes records data in Nodes have Properties Nodes Relationships are organized by Relationships have Properties Nodes Labels are grouped by Indexes Properties map from Nodes/Rels to
15. Cypher
16. Crear nodos CREATE (c {name: "Continuum", address: "General Bustamante" } ) SET c:Company
17. Crear nodos CREATE (s {name: "Software"} ) SET s:Industry
18. Consultas (p1) MATCH (c:Company) WHERE c.name = "Continuum" RETURN c.address
19. Crear relaciones MATCH (c:Company), (s:Industry) WHERE c.name = "Continuum" AND s.name = "Software" CREATE (c)-[r:works_in]->(s)
20. Crear relaciones MATCH (c:Company) WHERE c.name = "Continuum" CREATE (c)-[:works_in]->(ux {name: "User Experience"} ) SET ux:Industry
21. Crear todo junto CREATE (bci {name: "Bci"} )-[r:works_in {since: 1937}]->(f {name: "Finance"} ) SET bci:Company SET f:Industry
22. Consultas (p2) MATCH (c:Company)-[r:works_in]-(:Industry {name: "Finance"} ) WHERE r.since > 1900 RETURN c
23. Consultas (p2) MATCH (c:Company)-[r:works_in]->(i:Industry) WHERE c.name = "Continuum" RETURN c,r,i
24. Patrones (c:Company)-[r:works_in]->(i:Industry)
25. Patrones (c:Company)-->(i:Industry)
26. Patrones (c:Company)<--(i:Industry)
27. Patrones (c:Company)--(i:Industry)
28. Patrones (p:Person)—[*]->(i:Industry)
29. Patrones (p:Person)—[:knows*1..3]->(p)-[:works_in]->(i:Industry)
30. Patrones MATCH ( :Company {name: “Continuum”} )<-[:fan_of]-( fan:Person )-[red:knows*1..3]->( contacto )-[:works_in]->( :Industry {name: "Venture Capital”} ) RETURN fan, red, contacto
31. Schema Index CREATE INDEX ON :Company(name) CREATE INDEX ON :Industry(name)
32. Schema Index CREATE INDEX ON :Company(name) CREATE INDEX ON :Industry(name) MATCH (c:Company)-[r:works_in]->(i:Industry) WHERE c.name = "Continuum" RETURN c,r,i
33. Legacy Index START n=node:MyCustomIndex(value=foo) MATCH (n)-...
34. ¡Gracias! Leo Soto M. (@leosoto) Chief Wildcard @continuumhq - 2013