ext_typoscript_setup.txt

config.tx_extbase {
    persistence {
        classes {
            Vendor\MyExt\Domain\Model\Address {
                mapping {
                    tableName = tt_address
                    # optional. if you have added additional fields f.e.
                    columns {
                        tx_foo_description.mapOnProperty = description
                        tx_foo_my_other_column.mapOnProperty = unusualPropertyName
                    }
                }
            }
        }
    }
}