1. javascript for your data

2. MongoDB
Bridge the gap between key/val stores and traditional RDBMS

3. MongoDB
Bridge the gap between key/val stores and traditional RDBMS

4. MongoDB
the gap
table

5. MongoDB
the gap
table → collection

6. MongoDB
collection

7. MongoDB
collection
BSON document

8. MongoDB
collection
BSON document
a set of fields

9. MongoDB
collection
BSON document
a set of fields
key-value pair

10. MongoDB collection BSON document a set of fields key-value pair
key: a name (string)

11. MongoDB collection BSON document a set of fields key-value pair
key: a name (string)
val: any basic type
string, int, float, date, binary, array, document, ...

12. MongoDB
collection
of BSON documents
queryable

13. MongoDB
the gap
table → collection
SQL

14. MongoDB
the gap
table → collection
SQL → query objects

15. MongoDB
Query object

16. MongoDB
Query object
JSON-like query representation

17. MongoDB Query object JSON-like query representation
db.users.find({ 'lastname': 'Heckmann' });

18. MongoDB
Query object
{ 'lastname': 'Heckmann' }

19. MongoDB
Query object
{ 'lastname': 'Heckmann' }
could even be an array

20. MongoDB Query object { 'lastname': 'Heckmann' , 'body.odor': 'nasty'
, 'age': { $gt: 32 }
, ... }

21. MongoDB Query object { 'lastname': 'Heckmann' , 'body.odor': 'nasty'
, 'age': { $gt: 32 }
, ... }

22. MongoDB Query object { 'lastname': 'Heckmann' , 'body.odor': 'nasty'
, 'age': { $gt: 32 }
, ... }

23. MongoDB Query object { 'lastname': 'Heckmann' , 'body.odor': 'nasty'
, 'age': { $gt: 32, $lt: 65 }
, ... }

24. Query object MongoDB $gt $lt $ne $in $nin $all $not $size $exists
… more

25. MongoDB
Query object
RegExp too!

26. MongoDB Query object RegExp too
db.users.find({ 'lastname': /eckmann$/i });

27. MongoDB Query object Subsets
db.users.find({ 'lastname': /eckmann$/i }, { 'age': true });

28. MongoDB Query object db.users .find({ 'lastname': /eckmann$/i })
.sort({ 'lastname': -1 })
.limit(10)
.skip(10*(pageNumber - 1)) ;

29. MongoDB Query object db.users .find({ 'lastname': /eckmann$/i })
.sort({ 'lastname': -1 }) ← descending
.limit(10)
.skip(10*(pageNumber - 1)) ;

30. MongoDB Query object db.users .find({ 'lastname': /eckmann$/i })
.count() ;

31. MongoDB
no JOINs

32. MongoDB
no JOINs
less normalization

33. MongoDB
no JOINs
less normalization
embedded documents

34. MongoDB
embedded documents

35. embedded documents MongoDB { name: 'aaron' , scores:
[ { total: 93, class: ObjectID }
, { total: 46, class: ObjectID }
, { total: 20, class: ObjectID } ] }

36. embedded documents MongoDB { name: 'aaron' , scores:
[ { total: 93, class: ObjectID }
, { total: 46, class: ObjectID }
, { total: 20, class: ObjectID } ] }
think foreign keys

37. embedded documents MongoDB { name: 'aaron' , scores:
[ { total: 93, class: ObjectID }
, { total: 46, class: ObjectID }
, { total: 20, class: ObjectID } ] }
{ _id: ObjectID
, name: 'how to be a good neighbor'
, teacher: 'mr rogers' }

38. MongoDB ObjectID unique identifier of a document each document has one
auto inserted if missing

39. Insertion and Updation
MongoDB
Insertion and Updation

40. MongoDB

41. cheesy

42. Atomic Operations

43. MongoDB $set $unset $inc $push $pushAll $pop $pull $pullAll $addToSet
Atomic Ops
$set
$unset
$inc
$push
$pushAll
$pop
$pull
$pullAll
$addToSet
$rename

44. MongoDB
Indexing

45. MongoDB
Indexing
any property
into embedded documents
into arrays

46. MongoDB Indexing db.users.ensureIndex({ lastname: 1 })
db.users.ensureIndex({ 'body.odor': 1 })
db.users.ensureIndex({ 'body.odor': 1, age: 1 })

47. MongoDB
HTTP Interface

48. MongoDB HTTP Interface http://localhost:28017/

49. MongoDB Document oriented Schema-less Rich queries Full index support
Atomic operations
MapReduce
Auto-sharding / replication / GridFS

50. MongoDB
Mongoose

51. Thank You http://www.mongodb.org https://github.com/mongodb
loyments