Migrations: whatwhyhowwho? http://www.flickr.com/photos/moonjazz/1216783552/ 

I'm�Andrew. @andrewgodwin http://aeracode.org 

mi·gra·tion whatwhyhowwho? 1.�noun A�way�to�keep�your�sanity�when changing�model�definitions. See�also:�Schema�Evolution 

whatwhyhowwho? class Pony(models.Model ): name = models.CharField(max_length=100) height = models.IntegerField() class Pony(models.Model ): name = models.CharField(max_length=100) height = models.FloatField() born = models.DateField() 

whatwhyhowwho? django.contrib.migrations 

whatwhyhowwho? south migratory yadsel django-evolution dmigrations deseb schema-evolution 

whatwhyhowwho? south migratory yadsel django-evolution dmigrations deseb schema-evolution 

whatwhyhowwho? django-evolution ·�1½�years�old ·�uses�syncdb�initially ·�support�automatic�'hinting' 

whatwhyhowwho? dmigrations ·�8�months�old ·�uses�migrations�from�start ·�MySQL�only ·�migrations�are�project-wide 

whatwhyhowwho? south ·�8�months�old ·�uses�migrations�from�start ·�supports�'autodetection' ·�migrations�are�per-app ·�mine 

whatwhyhowwho? south django-evolution vs 

whatwhyhowwho? why? why? 

whatwhyhowwho? south django-evolution 1.�install 3.�make�initial �����migration 4.�migrate�to�initial 2.�syncdb 1.�install 2.�syncdb 

whatwhyhowwho? south django-evolution 1.�install 3.�make�initial �����migration 4.�migrate�to�initial 2.�syncdb 1.�install 2.�syncdb 

whatwhyhowwho? live�demo Ponies! South! django-evolution! 

whatwhyhowwho? the f�u�t�u�r�e 

whatwhyhowwho? http://code.djangoproject.com/wiki/SchemaEvolution http://south.aeracode.org http://code.google.com/p/django-evolution/ 

whatwhyhowwho? Thanks. Andrew�Godwin http://aeracode.org @andrewgodwin