| Parameter | Type | Default | Description | 
|---|---|---|---|
| table_name | str | - | The name of the table to store Workflow sessions. | 
| db_url | Optional[str] | None | The database URL to connect to. | 
| db_file | Optional[str] | None | The database file to connect to. | 
| db_engine | Optional[Engine] | None | The SQLAlchemy database engine to use. | 
| schema_version | int | 1 | Version of the schema. | 
| auto_upgrade_schema | bool | False | Whether to automatically upgrade the schema. |