erDiagram
clients ||--o{ client_labor_contracts : client_id
clients ||--|| client_calculations : client_id
clients ||--|| client_rounding_particulars : client_id
clients ||--|| client_overtimes : client_id
clients ||--|| client_demands : client_id
clients ||--|| client_depositings : client_id
clients ||--o| client_conflict_dates : client_id
clients ||--o{ client_unit_prices : client_id
clients ||--o{ organizations : client_id
clients ||--o{ spots : client_id
organizations ||--o{ spots : organization_id
client_unit_prices ||--o{ spots : client_unit_price_id
clients ||--o{ client_person_in_charges : client_id
person_in_charges ||--o{ client_person_in_charges : person_in_charge_id