[Answer]-Members_data.dob may not be NULL in Django

The syncdb command only creates tables if they do not exist. It does not handle migrations for you. You have a few options:

1. If there is no important data in the table, drop the table and run syncdb again to recreate it.
2. Update the column to allow null in a db shell. The correct command depends on which database you are using.
3. Use a migration tool, like South.

To drop the table in sqlite:

Open a dbshell

./manage.py dbshell

Drop the table

drop table <tablename>