MySQL, PostgreSQL and Rails A polemic

A polemic

Pity the poor programmer

Slaving away in the bit mines

Just store my data!

<polemic>

Network effect

Features

Features PostgreSQL MySQL

Multiple table types Clustering ..? MySQL

PostgreSQL Genetic Query Optimizer Procedural Languages Functional/Partial Indexes Oracle Compatibility Advanced Rules, Stored Procedures, Triggers pgSQL (Oracle) Tcl Perl Python Java PHP R Ruby Scheme sh

pgSQL (Oracle)

Tcl

Perl

Python

Java

PHP

R

Ruby

Scheme

sh

Speed

http://tweakers.net/reviews/657/5/database-test-dual-intel-xeon-5160-pagina-5.html

http://www.spec.org/jAppServer2004/results/jAppServer2004.html

Licence

From the MySQL website

From the MySQL website

http://www.kitebird.com/articles/ruby-mysql.html Guess what license?

The PostgreSQL license PostgreSQL Data Base Management System Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group Portions Copyright (c) 1994-1996 Regents of the University of California Permission to use, copy, modify, and distribute this software and its documentation for any purpose, without fee, and without a written agreement is hereby granted, provided that the above copyright notice and this paragraph and the following two paragraphs appear in all copies. IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN &quot;AS IS&quot; BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

</polemic>

On clever databases

— DHH We took a pretty radical stand: Stored procedures and all things that make your database clever are evil

Application database

Integration database

Integration database ✔

Complex processes

Recursive structures (etc)

Smart databases & Rails Maintain with migrations ..?

Maintain with migrations

..?

Fin

Questions

Postgres with Rails