Working with NoSQL Databases

Working with NoSQL Databases

How to get started with NoSQL?

Since 2009 NoSQL databases becomes more and more popular. But why?

• No usage of SQL, that means
• Less complexity
• Better portability
• Boundlessness
• User-friendliness
• Most databases are Open-Source
• Performance
• Scalability

Famous companies like Twitter, Facebook and Amazon are using NoSQL databases.
What sorts of NoSQL databases are used today?

• Key-Value stores
• Easy to implement
• Only key-value-pairs can be stored
• Difficult to build complex data structures
• Column stores
• Columns don't have to be defined in advance.
• A row can have different numbers of cells
• Document stores
• Like key-value stores, but allows nested values
• Graph databases
• Objects and relationships are modelled and persisted as nodes and edges of a graph

What NoSQL databases are present today?

• Cassandra
• Data Model: Columnfamily
• Query API: Thrift
• CouchDB
• Data Model: Document
• Query API: map/reduce views
• HBase
• Data Model: Columnfamily
• Query API: Thrift, REST
• MongoDB
• Data Model: Document
• Query API: Cursor
• Neo4j
• Data Model: Graph
• Query API: Graph
• Redis
• Data Model: Collection
• Query API: Collection
• Riak
• Data Model: Document
• Query API: Nested hashes
• Scalaris
• Data Model: Key/value
• Query API: get/put
• Tokyo Cabinet
• Data Model: Key/value
• Query API: get/put
• Voldemort
• Data Model: Key/value
• Query API: get/put

.NET APIs

Cassandra

• FluentCassandra
• https://github.com/managedfusion/fluentcassandra
• http://nuget.org/List/Packages/FluentCassandra
• http://coderjournal.com/2010/06/your-first-fluent-cassandra-application/

CouchDB

• SharpCouch
• http://code.google.com/p/couchbrowse/source/browse/trunk/SharpCouch/SharpCouch.cs

MongoDB

• MongoDB Driver
• http://www.mongodb.org/display/DOCS/Drivers
• http://www.nuget.org/List/Packages/MongoDB.Driver

Tokyo Cabinet

• TokyoTyrant.NET
• http://tokyotyrant.codeplex.com/

Further Reading

A good introduction to the concepts of NoSQL is the paper "NoSQL Databases" from Christof Strauch. 
Also read the "Scalable SQL and NoSQL Data Stores" from Rick Cattell.

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