django-admin.py startproject helloworld

python manage.py startapp hello 

# Application definition 
 
INSTALLED_APPS = [ 
  'django.contrib.admin', 
  'django.contrib.auth', 
  'django.contrib.contenttypes', 
  'django.contrib.sessions', 
  'django.contrib.messages', 
  'django.contrib.staticfiles', 
  'hello', 
]

DATABASES = {
  'default': {
    'ENGINE': 'django.db.backends.mysql',
    'NAME': 'big_data',
    'USER': 'root',
    'PASSWORD': '1234',
    'HOST': '10.93.84.53',
    'PORT': '3306',
  }
}

from django.db import models

class AlarmGroup(models.Model):
  group_name = models.CharField(primary_key=True, max_length=250)
  group_des = models.TextField(blank=True, null=True)
  members = models.TextField(blank=True, null=True)
  timestamp = models.DateTimeField()

python manage.py makemigrations
python manage.py migrate

CREATE TABLE `alarm_group` (
 `group_name` varchar(250) NOT NULL,
 `group_des` blob,
 `members` blob,
 `timestamp` datetime NOT NULL,
 `on_duty` blob,
 `leader` blob,
 PRIMARY KEY (`group_name`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8

python manage.py inspectdb

class AlarmGroup(models.Model):
  group_name = models.CharField(primary_key=True, max_length=250)
  group_des = models.TextField(blank=True, null=True)
  members = models.TextField(blank=True, null=True)
  timestamp = models.DateTimeField()

  class Meta:
    managed = False
    db_table = 'alarm_group'