Fixed #19279 - Clarified order of database setup and Django install.

* If you're using an unofficial 3rd party backend, please consult the

  documentation provided for any additional requirements.

If you plan to use Django's ``manage.py syncdb`` command to

automatically create database tables for your models, you'll need to

ensure that Django has permission to create and alter tables in the

database you're using; if you plan to manually create the tables, you

can simply grant Django ``SELECT``, ``INSERT``, ``UPDATE`` and

``DELETE`` permissions. On some databases, Django will need

``ALTER TABLE`` privileges during ``syncdb`` but won't issue

``ALTER TABLE`` statements on a table once ``syncdb`` has created it.

If you plan to use Django's ``manage.py syncdb`` command to automatically

create database tables for your models (after first installing Django and

creating a project), you'll need to ensure that Django has permission to create

and alter tables in the database you're using; if you plan to manually create

the tables, you can simply grant Django ``SELECT``, ``INSERT``, ``UPDATE`` and

``DELETE`` permissions. On some databases, Django will need ``ALTER TABLE``

privileges during ``syncdb`` but won't issue ``ALTER TABLE`` statements on a

table once ``syncdb`` has created it. After creating a database user with these

permissions, you'll specify the details in your project's settings file,

see :setting:`DATABASES` for details.

If you're using Django's :doc:`testing framework</topics/testing>` to test

database queries, Django will need permission to create a test database.