1. Is Apache CouchDB for you?
Sumedha Rubasinghe

2. During this 45 mins.. What is Apache CouchDB?
Paradigm for modeling data
Demonstration
Features

3. What CouchDB is NOT.. Relational Database SQL Tabular storage of data
Replacement for relational databases

4. Different paradigm to model data
Real world application – based on data in a document
Relational model – maps data into tables, columns
How about storing the document as it is !!!

5. What is CouchDB then? Document based database server
Key-value type of storage
Schema free documents
stored in JSON format
versioning
REST API
Views
Open source

6. JSON ? Java Script Object Notation
lightweight data storage format based on a subset of JavaScipt syntax
eg: {
"Subject": "ASF turns 10",
"Author": "ajith",
"PostedDate": " ",
"Tags": [
"Apache Software Foundation",
"Open source" ],
"Body": "Recently Apache Software Foundation became 10 years old." }

7. Getting started - Installation
Documentation n
Unix-like systems
Mac OS X
Windows
Latest source distribution (4th Dec 2009)
0.10.1

8. Accessing DB engine - REST
REST API
curl (unix like OS)
cURL (windows)
GET/PUT/POST/DELETE

9. Accessing DB engine - Futon
Futon – Web administration console

10. Creating a database
Using REST API
Using Futon

11. Creating a document
Futon
REST API

12. Views What is a view? View in CouchDB context
A "show" that directly renders a document using JavaScript
MapReduce
Two types
Permanent view
Indexed
JSON for the view is stored as a design document
Temporary view
Sent via a HTTP POST
Computed on the fly
Creating a view using Futon

13. Programming with CouchDB
Clients available for many languages
C, C#, Erlang, Java, JavaScript, Perl, PHP, Python,Ruby & many more..

14. Sample Java Client (CouchDB4J)
connection

15. Sample Java Client (CouchDB4J)
Accessing views

16. CouchApp
Develop CouchDB applications in a convenient directory structure
Separate folder for css,js,images,etc...
To deploy – couchapp push
Change & deploy – couchapp push

17. Interesting features Replication Versioning Validation
functions/macros

18. Important configuration files
Linux environment
Start up script
/usr/local/etc/init.d/couchdb start | status | stop
Configurations (ports,users)
/usr/local/etc/couchdb/local.ini

19. Samples on the web http://jchrisa.net/cal/_design/cal/index .html

20. References

21. Thank you