An introduction to neo4j I gave at National University of Singapore in April 2013.

1. Graph
Databases

2. What?

3. NoSQL

4. Nodes

5. Rela6onships
colleagues

6. Proper6es
name:
Satyam
colleagues
since:
2012
name:
Kevin

7. What
is
it
good
for?

8. Social
Graphs

10. Recommenda6ons

12. Fraud
Detec6on

14. neo4j

15. j
for
Java

16. embedded

17. Java

19. REST

20. CYPHER

21. A

22. C

23. I

24. D

25. Shortest
Path

26. Cypher
vs.
SQL
Source:
h*p://www.sqlteam.com/forums/topic.asp?TOPIC_ID=77262

27. Cypher
vs.
SQL
START
n=node(2),
m=node(5)
MATCH
p=n-­‐[r*]-­‐>m
WITH
extract(x
in
r:
x.kilometers)
as
scores,
length(p)
as
len
RETURN
scores,
reduce(res=0,
x
in
scores:
res
+
x)
as
totalscore,
len
ORDER
BY
totalscore
desc;

28. Umm,
wat?
Source:
Flickr
CreaEve
Commons

29. Cypher
vs.
SQL
PERFORMANCE

30. Depth
Execu6on
–
MySQL
Execu6on
–
neo4j
2
0.016
0.010
3
30.267
0.168
4
1,543.505
1.359
5
Not
finished
in
an
hour
2.132
Source:
h*p://www.neotechnology.com/2012/06/how-­‐much-­‐faster-­‐is-­‐a-­‐graph-­‐database-­‐really/

32. What’s
cooking?
Source:
Flickr
CreaEve
Commons

33. Thank
you