Mapping entities to the database tables

After the Database object is created, entities are defined, and a database is bound, the next step is to map entities to the database tables using the generate_mapping() method:

db.generate_mapping(create_tables=True)

This method creates tables, foreign key references and indexes if they don’t exist. After entities are mapped, you can start working with them in your Python code - select, create, modify objects and save them in the database.