| Name | Engine | Collation | Row Count | Data Length | Last Inserted Id | Comment | Average Row Length | Row Format | Created | Updated |
| Constraint Name | Table Name | Columns | Referenced Table | Referenced Columns | Update Rule | Delete Rule |
| fk_payment_customer | payment | customer_id | customer | id | RESTRICT | RESTRICT |
| fk_payment_manager | payment | manager_id | phpgen_users | user_id | RESTRICT | RESTRICT |