CouchDB is an Apache supported NoSQL storage.

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2. Agenda
 NoSQL Vs SQL
 Basic Concepts & RESTful API
 Introduction to CouchDB?
 Features of CouchDB
 Installation and Configuration
 Questions & Answers

3. NoSQL vs SQL
 SQL vs NoSQL Data Integrity
 SQL vs NoSQL Transactions
 SQL vs NoSQL CRUD Syntax Show Syntax
 SQL vs NoSQL Performance
 SQL vs NoSQL Scaling
Types of NoSQL Datastores
 Key - value Stores (Redis, Riak, Memcached)
 Document stores(CouchDB, MongoDB)
 Column stores (Cassandra, Apache Hadoop/HBase)
 Graph/Object stores (InfiniteGraph, Neo4J)

4. RESTful API (Representational State Transfer)
 Stateless interaction
 Doesn’t use login sessions or store other state information on the server
 Communication over HTTP
 Common HTTP methods (GET, POST, PUT, DELETE)
 Uses standard HTTP codes
 {200 – Success, 300 – Redirection, 400 – User error, 500 – Server error}
 Manipulates resources
 A unique URL identifies each resource. can manipulate it with standard HTTP
methods

5. Introduction to CouchDB
• Released in 2005 and became an Apache project in 2008.
• Non technical can learn it
• Written in Erlang.
• A document oriented NoSQL Database
• Store data with JSON document
• Uses JavaScript as a query language for Map/Reduce indexes
• HTTP for its API
• RESTful interface

6. Document Oriented Database

7. Design Documents contents
 Views
 Views are the primary tool used for querying and reporting on CouchDB databases.
 Show
 Use to represent documents in various formats, commonly as HTML.
 List
 Use to customize document presentation, but on View Functions results.
 Update Handlers
 Update handlers are functions that clients can request to invoke server-side logic that
will create or update a document.
 Filters
 Filters are special design document functions that allow the changes feed to emit only
specific documents that pass filter rules.
 Validation
 Use to prevent invalid or unauthorized document update

8. CouchDB access via CURL
 Check the server status:
 Get list of all databases:
 Create database:
 Delete database:

9. Futon: Web GUI Administration Panel
 http://localhost:5984/_utils/

10. Installation and Configuration
Windows Ubuntu
 http://couchdb.apache.org/#download Prepare the server first.

11. Questions & Answers

12. A Quick comparison: back