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create table questionnaires ( id int primary key auto_increment, title varchar(255) ); create table questios ( id int primary key auto_increment, questionnaire_id int, title varchar(255), foreign key (questionnaire_id) references questionnaires(id) ); create table answers ( id int primary key auto_increment, question_id int, title varchar(255), rigth bool, foreign key (question_id) references questios(id) );
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