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create table addresses ( id int primary key, address varchar(255) -- rest person data ); create table persons ( id int primary key, name varchar(255), address_id int references addresses(id), -- rest person data index(address_id) ); create table documents ( id int primary key, name varchar(255), person_id int references persons(id), address_id int references addresses(id), -- rest document data data index(person_id), index(address_id) );
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