This document discusses graphs and Neo4j. It begins with definitions of vertices, edges, and graphs. It then shows examples of creating a graph representing the Smith family relationships in Neo4j using Cypher queries. These queries create nodes for family members and relationships between them like parent/child and marriage. It asks questions like who are someone's parents, siblings, or cousins that can be answered by running Cypher queries on the graph.

1. evandro.venancio@gmail.com
@evenancio
evenancio.wordpress.com
linkedin.com/in/evandrovenancio

2. O que é um Grafo ???
Vértice = Nó
Arco = Relacionamento
arco
Vértice A
Vértice B

3. Santos
Rodovia dos
Imigrantes
São Bernardo do Campo
São Paulo
Rodovia dos
Imigrantes

4. [:imigrantes]
São
Bernardo do
Campo
Santos
São Paulo

5. 1736
Leonhard Euler
As pontes de Königsberg

6. SOME FEATURES
#Big Data tools
#Data Center and
Cloud Software
#Technology of
the Year
•
•
•
•
•
•
•
•
•
Totalmente Transacional (ACID)
Tem controle de concorrência
Armazenamento próprio baseado em discos
Escalável para múltiplas máquinas
Possui uma linguagem intuitiva (Cypher)
Possui interface RESTFul
Possui API nativa em Java
Pode ser distribuído como um servidor Standalone
Pode ser embutido na aplicação

9. Let’s to play ???
#The Smith Family lab#

10. Dad
Mom
John Smith
our hero
bastard
bro
sister
beautiful
wife
my cousin
my children

11. CYPHER – Creating the Smith family -> 11 nodes
CREATE
CREATE
CREATE
CREATE
CREATE
CREATE
CREATE
CREATE
CREATE
CREATE
CREATE
(dad:People {name:"Joseph Smith", datebirth: 1961 })
(mom:People {name:"Joan Smith", datebirth: 1963 })
(me:People {name:"John Smith", datebirth: 1982 })
(sister:People {name:"Josephine Smith", datebirth: 1986 })
(bro:People {name:"Jonathan Smith", datebirth: 1994 })
(wife:People {name:"Jennifer K. L. Smith", datebirth: 1984 })
(children1:People {name:"Jen-El Smith", datebirth: 2005 })
(children2:People {name:"Jil-El Smith", datebirth: 2007 })
(children3:People {name:"Juju-El Smith", datebirth: 2011 })
(children4:People {name:"Jor-El Smith", datebirth: 2013 })
(cousin:People {name:"Cousine Smith Oliver", datebirth: 2013 })

13. CYPHER – Creating the basic relationship between the
Smiths 1/2
MATCH (dad:People {name:"Joseph Smith" })
MATCH (mom:People {name:"Joan Smith" })
MATCH (me:People {name:"John Smith" })
MATCH (sister:People {name:"Josephine Smith" })
MATCH (bro:People {name:"Jonathan Smith" })
CREATE (me)-[:IS_SON_OF]->(dad)
CREATE (me)-[:IS_SON_OF]->(mom)
CREATE (sister)-[:IS_SON_OF]->(dad)
CREATE (sister)-[:IS_SON_OF]->(mom)
CREATE (bro)-[:IS_SON_OF]->(dad)

15. CYPHER – Creating the basic relationship between the
Smiths 2/2
MATCH (sister:People {name:"Josephine Smith" })
MATCH (cousin:People {name:"Cousine Smith Oliver" })
MATCH (me:People {name:"John Smith" })
MATCH (wife:People {name:"Jennifer K. L. Smith" })
MATCH (children1:People {name:"Jen-El Smith" })
MATCH (children2:People {name:"Jil-El Smith" })
MATCH (children3:People {name:"Juju-El Smith" })
MATCH (children4:People {name:"Jor-El Smith" })
CREATE (cousin)-[:IS_SON_OF]->(sister)
CREATE (me)-[:IS_MARRIED_WITH]->(wife)
CREATE (children1)-[:IS_SON_OF]->(me)
CREATE (children2)-[:IS_SON_OF]->(me)
CREATE (children2)-[:IS_SON_OF]->(wife)
CREATE (children3)-[:IS_SON_OF]->(me)
CREATE (children3)-[:IS_SON_OF]->(wife)
CREATE (children4)-[:IS_SON_OF]->(me)
CREATE (children4)-[:IS_SON_OF]->(wife)

17. SOME QUESTIONS!!!
1) Quem são os pais de John Smith?
MATCH (me:People {name:"John Smith" })
MATCH (me)-[:IS_SON_OF]->(parents)
RETURN parents.name
2) Quem são os filhos de John Smith?
MATCH (me:People {name:"John Smith" })
MATCH (me)<-[:IS_SON_OF]-(children)
RETURN children.name
3) Quem são os irmãos de John Smith?
MATCH (me:People {name:"John Smith" })
MATCH (me)-[:IS_SON_OF]->(parents)<-[:IS_SON_OF]-(brothers)
RETURN DISTINCT brothers.name
4) Quem são os irmãos de John Smith do mesmo pai e da mesma mãe?
MATCH (me:People {name:"John Smith" })
MATCH (me)-[:IS_SON_OF]->(parents)<-[:IS_SON_OF]-(brothers)
WITH me, brothers, count(parents) as parents_count
WHERE parents_count = length(me-[:IS_SON_OF]->())
RETURN brothers.name

18. 5) Quem são os primos de Cousine?
MATCH (cousin:People {name:"Cousine Smith Oliver" })
MATCH (cousin)-[:IS_SON_OF]->(mysister)
MATCH (mysister)-[:IS_SON_OF]->(ourparents)<-[:IS_SON_OF]-(brothers_of_my_sister)
MATCH (brothers_of_my_sister)<-[:IS_SON_OF]-(sons_of_brothers_of_my_sister)
RETURN DISTINCT sons_of_brothers_of_my_sister.name
Para finalizar, vamos deixar um pouco mais
complexo!

19. 6) Quem são os primos de Cousine que torcem para o Chelsea?
6.1 – Creating Nodes
MATCH (children1:People {name:"Jen-El Smith" })
MATCH (children4:People {name:"Jor-El Smith” })
CREATE (chelsea:SoccerTeam { name: “Chelsea”})
CREATE (children1)-[:IS_FAN_OF]->(chelsea)
CREATE (children4)-[:IS_FAN_OF]->(chelsea)
6.2 MATCH
MATCH
MATCH
MATCH
MATCH
WHERE
Query
(cousin:People {name:"Cousine Smith Oliver" })
(cousin)-[:IS_SON_OF]->(mysister)
(mysister)-[:IS_SON_OF]->(ourparents)<-[:IS_SON_OF]-(brothers_of_my_sister)
(brothers_of_my_sister)<-[:IS_SON_OF]-(sons_of_brothers_of_my_sister)
(sons_of_brothers_of_my_sister)-[:IS_FAN_OF]->(soccer_team)
soccer_team.name = "Chelsea"

21. evandro.venancio@gmail.com
@evenancio
evenancio.wordpress.com
linkedin.com/in/evandrovenancio