Dr Nic » Magic Multi-Connections: A “facility in Rails to talk to more than one database at a time”
Revolution On Rails: ActsAsWithReadonly to support read-only DB slave databases
me talking out loud: "getting" joins
a good explaination of SQL joins
Robby on Rails : Master/Slave Databases with Ruby on Rails
send writes to the master db, reads to one or more slaves
assert_efficient_sql - O'Reilly Ruby
rails plugin that can detect inefficient queries in test cases
MySQL :: MySQL 5.0 Reference Manual :: 9.1.4 Connection Character Sets and Collations
Propel
PHP5 ORM
Derivante » PHP ActiveRecord with PHP 5.3
dORM - PHP ORM (Object Relational Mapper)
ruckusing - Google Code
php based database migration suite
MySQL :: Unicode and Other Funny Characters
South
database migrations for django
DeadWisdom / Migratory / wiki / Home — bitbucket.org
another db migration tool for django
Ryan's Scraps: What's New in Edge Rails: Pessimistic Locking
Dr. Dobb's | AJAX & Record Locking | September 8, 2006
Multiuser web applications have their own challenges
http://dbisyourfriend.heroku.com/
Reflections on MongoDB // Collective Idea
Transactions In Rails - Mark Daggett's Blog