GraphConnect Europe 2017 Dom Davis, Tech Marionette

1. Dom Davis
@idomdavis
Decyphering
Your Graph Model

2. Dom Davis
@idomdavis
Decyphering
Your Graph Model

3. Dom Davis
@idomdavis
Decyphering
Your Graph Model

4. (graphs)-[:ARE]->(everywhere)

5. 2
3
1
4

6. hGps://en.wikipedia.org/wiki/Graph_(discrete_mathemaMcs)
A directed graph or digraph is a graph in which edges have orientations. It is written as an ordered pair G = (V, A)
(sometimes G = (V, E)) with
• V a set whose elements are called vertices, nodes, or points;
• A a set of ordered pairs of vertices, called arrows, directed edges (sometimes simply edges with the corresponding
set named E instead of A), directed arcs, or directed lines.
An arrow (x, y) is considered to be directed from x to y; y is called the head and x is called the tail of the arrow; y is said
to be a direct successor of x and x is said to be a direct predecessor of y. If a path leads from x to y, then y is said to be
a successor of x and reachable from x, and x is said to be a predecessor of y. The arrow (y, x) is called the inverted
arrow of (x, y).
A directed graph G is called symmetric if, for every arrow in G, the corresponding inverted arrow also belongs to G. A
symmetric loopless directed graph G = (V, A) is equivalent to a simple undirected graph G′ = (V, E), where the pairs of
inverse arrows in A correspond one-to-one with the edges in E; thus the number of edges in G′ is | E | = | A |/2, that is
half the number of arrows in G.

7. (speaker)-[:GIVES]->(talk)

8. CREATE
(s:Speaker {
name: "Dom Davis"
})-[:GIVES]->(Talk {
title: "Decyphering your graph model"
})

10. Noun Noun
Verb

11. Graphs Everywhere
Are

12. Speaker Talk
Gives

13. Subject Object
Verb

14. subject - verb - object

15. subject - object - verb

16. verb - subject - object

17. verb - object - subject

18. object - verb - subject

19. object - subject - verb

20. subject - verb - object

21. NOUNS

22. Speaker, Talk, Delegate, Room

23. VERBS

24. –Johnny Appleseed
Speaker gives talk in room
Delegate aGends talk in room

25. –Johnny Appleseed
(:Speaker)-[:GIVES]->(:Talk)-[:IN]->(:Room)
(:Delegate)-[:ATTENDS]->(:Talk)-[:IN]->(:Room)

26. –Johnny Appleseed
Speaker has a name

27. –Johnny Appleseed
Speaker has a name
Room has a name

28. –Johnny Appleseed
Speaker has a name
Room has a name
Talk has a Mtle

29. –Johnny Appleseed
Speaker has a name
Room has a name
Talk has a Mtle
Talk has a start Mme

30. –Johnny Appleseed
Speaker has a name
Room has a name
Talk has a Mtle
Talk has a start Mme
Talk has an end Mme

31. –Johnny Appleseed
Speaker has a name
Room has a name
Talk has a Mtle
Talk has a start Mme
Talk has a duraMon

32. –Johnny Appleseed
How long did I spend in talks?

33. –Johnny Appleseed
How long did I spend in talks?
How long did I spend giving talks?

34. –Johnny Appleseed
Will I be out of talk A in Mme for talk B?

35. –Johnny Appleseed
Speaker has a company
Speaker has a role

36. –Johnny Appleseed
Speaker has role at company

37. –Johnny Appleseed
Speaker has role at company
Delegate has role at company

38. –Johnny Appleseed
Company has a name
Role has a Mtle

39. Speaker gives talk in room
Delegate aGends talk in room
Speaker has role at company
Delegate has role at company

49. (:Speaker {name: "Dom Davis"})

50. (:Speaker)-[:HAS_NAME]->(:`Dom Davis`)

51. (:Speaker {name: "Dom Davis"})
-[:HAS_ROLE {type: "Primary"}]->(:Role {title: "CTO"})
-[:IN_COMPANY]->(:Company {name: "Tech Marionette"})

52. -[:HAS_ROLE {type: "Primary"}]->

53. (:Speaker {name: "Dom Davis"})
-[:HAS_PRIMARY_ROLE]->(:Role {title: "CTO"})
-[:IN_COMPANY]->(:Company {name: "Tech Marionette"})

54. (r:Role {title: "CTO"}),
(:Speaker {name: "Dom Davis"})-[:HAS_ROLE]->(r)
-[:IN_COMPANY]->(:Company {name: "Tech Marionette"}),
(r)-[:TYPE]->(:Primary)

55. –Johnny Appleseed
Drive the model from the language of the domain

56. –Johnny Appleseed
Concepts, ProperMes, RelaMonships

57. (:Concept {
property1: "some name",
// : : :
propertyN: "some other name"
})

58. (:Concept {
properties: ["A", "B", "C"]
})

59. –Johnny Appleseed
Concepts have properMes

60. (:Concept)-[:HAS]->(p:Property)
SET p.Name = "A"

61. (:Instance)-[:HAS]->(v:Value)
SET v.Name = "A", v.Data = "Foo"

62. (:Concept)-[:IN]->(:Schema)

63. (:Schema)-[:ALIAS]->(:Concept)

64. (s:Schema), (c:Concept {name: "Ticketing System"}),
(s)-[:ALIAS {name: "JIRA"}]-(c),
(s)-[:ALIAS {name: "Bugzilla"}]-(c),
(s)-[:ALIAS {name: "Fogbugz"}]-(c)

65. –Johnny Appleseed
Labels, Nodes, RelaMonships, ProperMes

66. –Johnny Appleseed
Schemas,
Concepts, ProperMes, RelaMonships,
Instances, Values, Links

67. –Johnny Appleseed
TickeMng system has Mckets raised by users

68. –Johnny Appleseed
Schemas,
Concepts, ProperMes, RelaMonships,
Instances, Values, Links

69. –Johnny Appleseed
Labels, Nodes, RelaMonships, ProperMes

70. –Johnny Appleseed
Schemas,
Concepts, ProperMes, RelaMonships,
Instances, Values, Links

71. (g:Graph)-[:DESCRIBED_BY]-(g)