"Unknown command syncdb" running "python manage.py syncdb"
You can run the command from the project folder as: "python.exe manage.py migrate", from a commandline or in a batch-file.
You could also downgrade Django to an older version (before 1.9) if you really need syncdb.
For people trying to run Syncdb from Visual Studio 2015:
The option syncdb was removed from Django 1.9 (deprecated from 1.7), but this option is currently not updated in the context menu of VS2015.
Also, in case you didn't get asked to create a superuser you should manually run this command to create one: python.exe manage.py createsuperuser
I want to create the tables of one database called "database1.sqlite", so I run the command: 

python manage.py syncdb

but when I execute the command I receive the following error:

Unknown command: 'syncdb'
  Type 'manage.py help' for usage.

But when I run 

manage.py help 

I don`t see any command suspicious to substitute 

python manage.py syncdb

Version of Python I use: 3.4.2    Version of Django I use:1.9 
I would be very grateful if somebody could help me to solve this issue.
Regards and thanks in advance