public static void addConnection(String nom, String hashtag) {
		Connection con = null;
		try {
			Class.forName("org.sqlite.JDBC");
			con = DriverManager.getConnection("jdbc:sqlite:" + Parametre.workspace + "/bdd_models");
			Statement stmt = con.createStatement();
			ResultSet rs;
			ResultSet rs2;
			ResultSet rs3;
			rs = stmt.executeQuery("select nom from modeles where nom='" + nom + "'");
			if (rs.next() != false && rs.getString("nom").equals(nom)) {
				insertTag(hashtag);
				rs3 = stmt.executeQuery("select nom from correspondances where nom='" + nom + "' and tag='" + hashtag + "'");
				if (rs3.next() != false && rs3.getString("nom").equals(nom)) {
					System.out.println("cette correspondace existe deja");
				} else {
					System.out.println("insertion dan la table de correspondances");
					stmt.executeUpdate("insert into correspondances values('" + hashtag + "', '" + nom + "')");
				}
			} else {
				System.out.println("ce modele n'existe pas");
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				con.close();
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}