text: from sqlalchemy import Column, Integer, String, Text, DateTime, Float, Boolean, PickleType, Boolean
  from sqlalchemy.ext.declarative import declarative_base
  
  Base = declarative_base()
  
  class ProjectKey(Base):
      '''This is Project Keys sample Data model class.'''
      
      __tablename__ = "tProjectKeys"
      __table_args__ = {"schema":"KnowHow.dbo"}
  
      id = Column(Integer, primary_key=True, nullable=False)
      webKey = Column(Text, nullable=False)
      mobileKey = Column(Text, nullable=True)
      projectID = Column(Integer, nullable=True)
      createdBy = Column(Integer, nullable=True)
      createdOn = Column(DateTime, nullable=True)
      modifiedBy = Column(Integer, nullable=True)
      modifiedOn = Column(DateTime, nullable=True)
      isActive = Column(Boolean, nullable=True)
          
      def __repr__(self):
          return '<Project model {}>'.format(self.id)
  