create table witness
(
    id                                serial        not null,
    claim_id                          integer       not null,
    person_id                         integer       not null,
    created_at                        timestamp     not null default now(),
    updated_at                        timestamp,
    constraint primary_key_witness    primary key (id),
    constraint foreign_key_witness_claim    
        foreign key (claim_id) references claim(id),
    constraint foreign_key_witness_person   
        foreign key (person_id) references person(id)
);
