- NoSQL databases like MongoDB, Neo4j, and DynamoDB are schema-less, horizontally scalable, and support document-oriented and graph-like data structures. - MongoDB is a popular open-source document-oriented NoSQL database that uses JSON-like documents with dynamic schemas. - Python libraries like PyMongo, neo4j, and boto provide connectors for interacting with MongoDB, Neo4j, and DynamoDB from Python applications. - Phunka Technologies uses MongoDB to build applications including a food search engine that aggregates data from various sources and Neo4j for recommendation matching.

1. NoSQL Database and Python
Roshan Bhandari
Co-Founder,
Phunka Technologies

2. NoSQL Humor
3 RDBAs walk into a NoSQL bar. They can’t open the door … Do
you know why?
3 RDBAs walk into a NoSQL bar. They manage to enter anyhow but
they leave … Do you know why?

3. SQL and NoSQL
Structured Query Language NoSQL or Not Only SQL
work on predefined schema schema-free
Relational non-relational
joins no joins
vertical scaling and distribution very
tedious
horizontally scalable and distributed
Transactions and ACID property eventually consistent / BASE
(sometimes ACID like in Graph)

7. ● Scalable
● High-Performance
● Open-source
● Document-oriented
database
● developed by 10Gen.
Document Oriented Database

8. Understanding the Document Model
var p = {
‘_id’: ‘3432’,
‘title’: ‘Python Develeoper Meetup 4’,
‘presentations’: [
{
‘name’:’NoSQL Database and Python’,
‘presenter’:Roshan Bhandari
},
{
‘name’:’Natural Language Processing’,
‘presenter’:’Chandan Gupta’
}
]
}
> db.posts.save(p);
> db.posts.find({‘title’:’ Python Develeoper Meetup 4’’})

9. Cool features of MongoDb
● Index on each
fields in each
documents
and
collections,
● Geo-spatial
Indexes for
Geo-spatial
queries. $near,
$within_distan
ce, Bound
queries (circle,
box),
● Full Text
Indexing and
Search

10. Graph DB

12. Python Connectors for MongoDb
PyMongo
- PyMongo is a Python distribution containing tools for working with MongoDB, and is the
recommended way to work with MongoDB from Python.
- ORM-like layer on top of PyMongo.

13. Python Connectors for Neo4j
neo4djangopy2neo

14. Python Connectors for Dynamodb
Boto
An integrated interface to current and future infrastructural services offered by Amazon Web Services.
DynamodbMapper
DynamoDB is a minimalistic NoSQL engine provided by Amazon as a part of their AWS product.

15. Our NoSQL projects at Phunka

16. Food Search Engine
● Aggregating Food related Data from
○ Twitter
○ Google Places
○ Facebook
○ FSA UK
○ and many other api
● Using MongoDb to store and index data
● Make a real time search engine for food
MatchMaking and Dating for Food Traders
(still in research phase)
● Trying to use Neo4j to making
recommendation engine

17. ● Aggregating millions of tweets
every day.
● Saving them in MongoDb since
tweets are in json and it
becomes easy to dump them into
db.
● Denormalization helps to find
related hashtags in real time.

18. ● Utilizing FlipKarma dump data
from mysql to use Neo4j to
make project recommendations
based on
○ Search data
○ view data
○ uploaded project
categories
○ friend’s projects
○ likes and comments

19. Using Mongodb to:-
● for agile development with
easy database migration
● denormalization for better
analytics
● storing 100s of user’s daily
activity logs for analytics

20. We are hiring:-
-If you are python and nosql enthusiast or
expert
- if you have experience in mapping data
Then You are welcomed to our team
- to do cool stuffs with us
- learn and enjoy being a startup

21. Thank you for listening me carefully :-)

22. Questions?