Relational database management systems exist since the seventies. Since then they have increased in popularity and usage. Lots of (Internet) applications make use of a database system. Most of the time this is a SQL database. Its table structure is intuitive to understand and links are made using key columns. MongoDB is a relatively new, but increasingly popular database system. It builds on the adoption of NoSQL database systems and uses a variant to the new but quickly emerged JSON format for storing its data. In this presentation I will not only give an insight in the pros and contras of NoSQL in general, but I will also give a brief introduction of the various features of MongoDB.

2. WHOAMI
WOUTER IBENS
25 years old
MSc Computer Science
Work @ Kangaroot
→ Linux & Open Source
Solutions
Wouter.ibens@kangaroot
.net

3. INTRODUCTION TO
mongoDB

4. SQL
Databases contain tables
Tables contain rows
Rows contain data:
The columns of the table
Examples:
MySQL, MS SQL, PostgreSQL,
SQLite, ...
(NO)SQL
DOCUMENT STORE
Databases contain collections
Collections contain records
Records contain data:
The fields of the record
Examples:
MongoDB, CouchDB, ...

5. Mapping complex data is more intuitive
Freedom of datafields
Freedom of datatypes
Features come at a cost
DOCUMENT STORE VS SQL

6. mongoDB
Development started: October 2007
Initial release: 2009
JavaScript backend and shell
Data: JSON variant BSON

7. DB-ENGINES RANKING OF mongoDB

8. {
"_id":
ObjectId("5321b44c399f2131d4b87e06"),
"firstname": "Wouter",
"lastname": "ibens",
"age": 25,
"hobbies": [
"SCUBA Diving",
"Pathfinder"
],
"favfood": {
"name": "pizza",
"toppings": [
"mushrooms",
"olives",
"feta"
]
},
"boss":
ObjectId("507f1f77bcf86cd799439011")
}

9. db.coll.insert(record)
db.coll.find(query)[.skip(5)][.limit(5)]
db.coll.findOne(query)
db.coll.remove(query[, justone=false])
db.coll.update(query, record)
db.coll.update(query, $set: {changes})
db.coll.update(query, record,
{upsert: true, multi: true})
OPERATIONS

10. FEATURES
Replication
Sharding
GridFS
Capped collections
TTL
Server side JavaScript

11. REPLICATION

12. SHARDING

13. GridFS
Capped collections
TTL
Remote Javascript
OTHER FEATURES

14. THANK YOU

15. REFERENCES
http://slashdot.org/topic/bi/sql-vs-nosql-which-is-better/
http://askasya.com/post/why-shouldnt-i-embed-large-arrays-in-my-
documents
http://db-engines.com/en/ranking
http://docs.mongodb.org/manual/core/