create view nb_total_familles as
  select count(*) as nb_total_familles from famille;

create view nb_total_articles as
  select count(*) as nb_total_articles from article;

create view nb_total_tickets as
  select count(*) as nb_total_tickets from ticket;

create view nb_total_adherents as
  select count(*) as nb_total_adherents from adherent;
