October 8, 2010

JAOO Day 4 – Not Only SQL, NOSQL

Today I listened to Emil Eifrem CTO at Neo Technology. What I liked most of his talk was the categorization of the today existing NOSQL solution:

Key-Value Database
An Amazons project that uses global key-value mapping to for DB.

Dynamo: Amazon's Highly Available Key-value Store (2007) (http://s3.amazonaws.com/AllThingsDistributed/sosp/amazon-dynamo-sosp2007.pdf).

Other Example:

Column Database
A Google project that uses a big table, with column families.

BigTable: A Distributed Storage System for Structured
 Data (2006) (http://labs.google.com/papers/bigtable.html)

Other Example:

Document Database
Data is organized as document and a document is a key-value pair.


Graph Database
Data is organized in a graph, which Nodes and Relationships have properties.


Example of company using NOSQL
  • Google: Bigtable
  • Amazon: Dynamo
  • Amazon: SimpleDB
  • Yahoo: HBase
  • Microsoft: Dynomite
  • Facebook: Cassandra
  • LinkedIn: Voldemort 

No comments: