text: from datetime import datetime
  from nano.extensions import db
  from nano.utils import get_current_time
  
  class CompanyType(db.Model):
      __tablename__ = 'company_type'
  
      #column definitions
      id = db.Column(u'id', db.BigInteger, primary_key=True, nullable=False)
      name = db.Column(u'name', db.String(length=100))
      updated_at = db.Column(u'updated_at', db.DateTime, nullable=False) 
      created_at = db.Column(u'created_at', db.DateTime, nullable=False)
  