Document-Oriented Databases A CouchDB Primer This document provides an introduction to CouchDB, a document-oriented database. It discusses some key aspects of CouchDB including its use of JSON documents, RESTful API, built-in query language, and support for views. It also briefly compares CouchDB to MongoDB.

1. Document-Oriented Databases
A CouchDB Primer
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2. jsiarto
jeff@loudpixel.com
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3. SELECT * FROM reviews
JOIN movies ON movies.id
= reviews.movie_id WHERE
movies.title = ‘Gigli’;
movies reviews
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4. Name Jeff Siarto
Employee Number 0001
Titles President, Creative Director, Analyst
Websites http://loudpixel.com, http://siarto.com
Social Twitter: @jsiarto, Github: jsiarto
Jeff Ryan Allie
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5. {
"_id": "1d62f8555188f1267a6fcbe81f9dc54b",
"_rev": "5-1511a8ac9d5ad5512774545ae390201d",
"first_name": "Jeff",
"last_name": "Siarto",
"titles": [
"Partner",
"Analyst",
"Designer"
],
"online": {
"website": "http://siarto.com",
"twitter": "@jsiarto",
"github": "http://github.com/jsiarto"
}
}
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6. Data APIs YAML
JSON
Native Browser JavaScript
Support
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7. Futon
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8. Wednesday, March 17, 2010

9. REST
GET http://localhost:5984/loudpixel_employees/1d62f8...
PUT http://localhost:5984/loudpixel_employees/1d62f8...
POST http://localhost:5984/loudpixel_employees
DELETE http://localhost:5984/loudpixel_employees/1d62f8...
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10. CouchDB Views
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11. Map Function
function(doc) {
if (doc.type == "Full-time") {
doc.titles.map(function(title) {
emit(title, doc);
});
}
}
Reduce Function
function(key, values, combine) {
return values.length;
}
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12. CouchREST
http://github.com/jchris/couchrest
CouchREST Rails
http://github.com/hpoydar/couchrest-rails
CouchDB-Python
http://code.google.com/p/couchdb-python/
PHPillow
http://arbitracker.org/phpillow.html
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13. ★ Uses BSON instead of JSON
★ Dynamic query language
★ Interfaces using native drivers (no REST)
★ Not as durable as CouchDB in single-server
deployments
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14. Levee
Monitoring management dashboard that helps you build and
deliver research reports to clients
charts
datasets
data points } cot-0001
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15. Resources
http://couchdb.apache.org/
http://peepcode.com/products/couchdb-
with-rails
http://books.couchdb.org/relax/
http://www.mongodb.org/display/DOCS/
MongoDB,+CouchDB,+MySQL+Compare+Grid
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