import databases import ormar import sqlalchemy database = databases.Database("sqlite:///db.sqlite") metadata = sqlalchemy.MetaData() class Course(ormar.Model): ormar_config = ormar.OrmarConfig( database=database, metadata=metadata, # define your constraints in OrmarConfig of the model # it's a list that can contain multiple constraints # hera a combination of name and column will have a compound index in the db constraints=[ormar.IndexColumns("name", "completed")], ) id: int = ormar.Integer(primary_key=True) name: str = ormar.String(max_length=100) completed: bool = ormar.Boolean(default=False)