This will help the IT students to Know more about the NoSQL concept....

1. NOSQL
- Dhanshri M.Nagargoje

2. Contents
 Introduction to NOSQL
 Why NOSQL?
 Architecture
 Examples of NOSQL database
 NoSQL types
 Real World Use
 Conclusion

3. Basic Concepts
 Database – is a organized collection of
data.
 Data base Management System (DBMS)-
is a software package with computer
program.
 Relational DBMS - It is collection of data
items organized as a set of formally
described table.
 SQL-Special purpose programming
language designed for managing data in

4. NOSQL
 “NOSQL” = “Not Only SQL” =
Not Only using traditional relational DBMS
 Usually do not require a fixed table schema nor
do they use the concept of joins
 Alternative to traditional relational DBMS
• Flexible schema
• Quicker/cheaper to set up
• Massive scalability
• Relaxed consistency  higher performance &
availability

6. Why NOSQL?
 Every problem cannot be solved by
traditional relational database system
exclusively.
 Handles huge databases.
 Super flexible queries using map/reduce
 Rapid development (no fixed schema)
 Scale easily by adding servers
 High-write situations (eg activity tracking
or timeline rendering for millions of users)

7. Architecture

8. Characterstics
 Almost infinite horizontal scaling
 Very fast
 non-relational
 schema-free
 open source
 simple APIs
 Structured storage

9. Main NoSQL types -
 Key-Value Stores
 Document Databases
 Graph Databases
 ColumOriented
Data
Key-Value
Document
Column
Graph

10. Documents
 Documents are self contained,
aggregate data structures they consist
of attributes (name- value pairs)
attribute values have data types,which
can also be nested/hierarchical

11. Example document (JSON)
{
"id" : 1234,
"name" : {
"first" : “ddd",
"last" : “vvv"
},
"topics": [
"skating",
"music"
]
}

12. Key-value
 In a key-value store, a value is mapped
to a unique key to store data, supply
both key and value:
> store.set("user1234","...");
 To retrieve a value, supply its key:
> value = store.get("user1234");
keys are organised in databases,
buckets,
keyspaces etc.

13. Popular NoSQL
 Hadoop / Hbase
 Cassandra
 Amazon
SimpleDB
 MongoDB
 CouchDB
 Redis
 MemcacheDB
 Voldemort
 Hypertable
 Cloudata
 IBM
Lotus/Domino

14. NoSQL databases:

15. Real World Use
 Cassandra
◦ Facebook (original developer, used it till late 2010)
◦ Twitter
◦ Digg
◦ Reddit
◦ Rackspace
◦ Cisco
 BigTable
◦ Google (open-source version is HBase)
 MongoDB
◦ Foursquare
◦ Craigslist
◦ Bit.ly
◦ SourceForge
◦ GitHub

16. Conclusion
 NoSQL is a great problem solver
 Choose your NoSQL platform carefully
as each is designed for specific
purpose
 Get used to Map/Reduce

17. THANK
YOU..!!

18. Any
Questions????