The document discusses NoSQL and MongoDB. It explains that NoSQL databases are non-relational and do not use SQL. MongoDB is introduced as a popular document-oriented NoSQL database that uses documents with schemaless collections. Documents can store data in an embedded or referenced way.

1. No-SQL & mongoDB
@liushuaikobe

2. What’s No-SQL?

3. Strozzi NoSQL
(1998)
RDBMS
operator-stream
paradigm(PIPE)
Carlo Strozzi
a set of shell
routines that access
normal files of the
OS

4. No-SQL == Not Have SQL

5. Structured Query Language
No-SQL == Not Have SQL

6. …departs from the
relational model altogether; it
should therefore have been called
more appropriately 'NoREL'.

7. A meetup@San Francisco
——"open source, distributed, non relational databases”
Organized by Johan
Oskarsson(Last.fm)
Google's Bigtable & Amazon's
Dynamo
Eric Evans(then in RackSpace)
reintroduced “No-SQL”

8. No-SQL == non-relational

9. My regret however isn't about
what the name says, it's about
what it doesn't.
Eric Evans

10. no:sql(east) conference@ Atlanta

11. > select fun, profit
> from real_world
> where relational=false;

12. No-SQL == Not Only SQL

13. CAP Theorem
(Eric Brewer)
Consistency
Availability
Partition Tolerance

14. BASE
PH
A C I D
neutral
B A S E

15. B asically A vailable
S oft-state
Eventually Consistent

16. Why No-SQL?
Traditional RDBMS —— CA
Do We really need Transaction?
Horizontal-Scale

17. List Of NoSQL DBs
Wide Column Store
Document Store
Key Value / Tuple Store
Graph Databases
…

18. mongoDB

19. 10gen
established in 2007, @New York
originally aimed to build a Paas
architecture
released MongoDB, maintaining it

20. MongoDB Inc.
(2013.08)
established in 2007, @New York
originally aimed to build a Paas
architecture
released MongoDB, maintaining it

21. MongoDB
document-oriented(BSON) Storage
schema-free
high-performance
build for scale

22. Document

23. Data-Model Design
References
Embedded

24. Reference

25. Embedded

26. which way is better?
No Define answer.

27. A Instance

28. {
"actor_attributes"
:
{
"name"
:
"Dan
Tao",
"company"
:
"Google",
...
"email"
:
"daniel.tao@gmail.com"
},
"repository"
:
{
"fork"
:
false,
"watchers"
:
0,
"description"
:
"Oh,
nothing,
nothing",
...
"id"
:
13155632,
"name"
:
"breakneck"
},
"url"
:
"https://github.com/dtao/breakneck/compare/dccee09561...38984e5dce",
"created_at"
:
"2013-­‐09-­‐28T18:00:06-­‐07:00",
"actor"
:
"dtao",
"public"
:
true,
"type"
:
"PushEvent",
"payload"
:
{
"shas"
:
[
[
...
]
],
"head"
:
"38984e5dce1a21b778d4c26bde493270b4625662",
"ref"
:
"refs/heads/master",
"size"
:
1
}
}

29. RDBMS——ERD
Actor
Repo
1..1
1..1
1..n
1..n
Event

30. While in mongo…
{
"_id"
:
ObjectId("5287d3e947e36f2280584179")
"actor_attributes"
:
{
"name"
:
"Dan
Tao",
"company"
:
"Google",
...
"email"
:
"daniel@gmail.com"
{
}
"_id"
:
ObjectId("5287d3e947e36f22805844b3")
}
"actor_attributes"
:
{
"name"
:
"Dan
Tao",
"company"
:
"Google",
...
"email"
:
"daniel@gmail.com"
{
}
"_id"
:
ObjectId("5287d3e947e36f22805844c9")
}
"actor_attributes"
:
{
"name"
:
"Dan
Tao",
"company"
:
"Google",
...
"email"
:
"daniel@gmail.com"
}
}
Actor

31. {
"_id"
:
ObjectId("5287d41647e36f2280586033"),
“repository"
:
{
"fork"
:
false,
...
"name"
:
"breakneck"
},
{
"actor"
:
"Sam",
"_id"
:
ObjectId("5287d41647e36f2280586035"),
…
“repository"
:
{
"payload"
:
{
"fork"
:
false,
"shas"
:
[
...
[
"name"
:
"breakneck"
...
{
},
]
"_id"
:
ObjectId("5287d41647e36f2280586537"),
"actor"
:
"Tom",
],
“repository"
:
{
…
"ref"
:
"refs/heads/master",
"fork"
:
false,
"payload"
:
{
"size"
:
1
...
"shas"
:
[
}
"name"
:
"breakneck"
[
}
},
...
"actor"
:
"Mike",
]
],
…
"payload"
:
{
"ref"
:
"refs/heads/master",
"shas"
:
[
"size"
:
1
[
}
...
}
]
],
"ref"
:
"refs/heads/master",
"size"
:
1
}
}
Event

32. Summary
No-SQL => No? No!
Why No-SQL?
CAP & BASE
MongoDB (Inc.)
Schema design

33. How to Choose?
Depending on your needs…

34. Thanks
@liushuaikobe

35. Q & A
http:/
/www.girlsgonestrong.com/video-qa/