+ FOREIGN KEY(id_role) REFERENCES roles(id)
+);
+
+create table attachments (
+ url TEXT not null,
+ id_vote INTEGER not null,
+ FOREIGN KEY(id_vote) REFERENCES vote(id),
+ PRIMARY KEY(url, id_vote)
+);
+
+create table choices (
+ id INTEGER primary key autoincrement,
+ name TEXT not null,
+ id_vote INTEGER not null,
+ FOREIGN KEY(id_vote) REFERENCES vote(id)