text: from sqlalchemy import Column, String
  
  from samoyed.model import Base
  
  
  class School(Base):
      __tablename__ = 'school'
  
      school_code = Column(String(10), primary_key=True)
      school_name = Column(String(45), nullable=True)
      school_full_name = Column(String(45), nullable=False)
      school_address = Column(String(100), nullable=False)
  