1. Dineesha Suraweera

2. What is mongoDB? Open Source Document Oriented database
Cross- Platform
No - SQL 1

3. Published as GNU Affero General Public License and the Apache License
Developed by 10gen in 2007
Published as GNU Affero General Public License and the Apache License

4. Document Oriented vs Relational Databases
Schema less
Structure of a single object is clear
No complex joins
Deep query-ability
Ease of scale-out
Conversion / mapping of application objects to database objects not needed
Uses internal memory for storing the working set, enabling faster access of data

5. RDBMS
mongoDB
Database
Table
Collection
Tuple/Row
Document
column
Field
Table Join
Embedded Documents
Primary Key
Primary Key (Default key _id provided by mongodb itself)

6. MongoDB Architecture

7. Features Ad hoc queries Indexing Replication File storage Aggregation
Sharding
Capped collections

8. Horizontally Scalable Architecture

9. Sharding

10. Replication

11. Document Storage Document are stored in BSON(Binary JSON)
BSON - binary serialization of json like objects.
Any valid JSON can easily imported and queried.
MongoDB understand JSON natively.

12. MongoDB Storage Engines

13. db – show currently selected database. show dbs – output database list
Create Database
use DATABASE_NAME
db – show currently selected database.
show dbs – output database list

14. db.createCollection(name, options)
"mycol", { capped : true,
autoIndexID : true,
Size : ,
max : 10000
} )

15. db.COLLECTION_NAME.insert(document)
db.mycol.insert({
_id: ObjectId(7df78ad8902c),
title: 'MongoDB Overview',
description: 'MongoDB is no sql database',
tags: ['mongodb', 'database', 'NoSQL'],
likes: 100 })

16. Sample Document { _id: ObjectId(7df78ad8902c)
title: 'MongoDB Overview',
description: 'MongoDB is no sql database',
tags: ['mongodb', 'database', 'NoSQL'],
likes: 100,
comments: [
user:'user1',
message: 'My first comment',
dateCreated: new Date(2016,1,20,2,15),
like: 0 },
user:'user2',
message: 'My second comments',
dateCreated: new Date(2016,1,25,7,45),
like: 5 } ]

17. db.COLLECTION_NAME.find()
Query Document
db.COLLECTION_NAME.find()
(formatted way)
db.COLLECTION_NAME.find().pretty()

18. db.COLLECTION_NAME.ensureIndex({KEY:1})
Indexing
db.COLLECTION_NAME.ensureIndex({KEY:1})
db.mycol.ensureIndex({"title":1,"description":-1})

19. Demonstration

20. Non-Functional Features
Easy readability
High performance
High availability
Easy scalability
Aggregation
Stores data as documents or objects
(everyone works with objects)

21. Disadvantages or less good at ????
High transactions
Problems that require SQL

22. Other No-SQL databases
Cassandra
Accumulo
Cloudata
HPCC
ConcourseDB
Druid
SpliceMachine

23. Big Data Where to use ??? Content Management and Delivery
Mobile and Social Infrastructure
User Data Management
Data Hub

24. Adobe Ebay LinkedIn McAfee SAP Yandex
Users of MongoDB
Adobe
Ebay
LinkedIn
McAfee
SAP
Yandex

25. Thank You!