text: create table Invoice (
      id int8 not null,
      creationDate date,
      dueDate date,
      identifier varchar(255),
      invoiceState varchar(255),
      invoiceTotal numeric(19, 2),
      version int4,
      debitor int8,
      primary key (id),
      unique (identifier)
  );
  
  alter table Invoice
      add constraint FKD80EDB0D1D75383C
      foreign key (debitor)
      references Company;
  