Add transaction and commit statements to SQL scripts

sql/script_creation_dataset.sql

@@ -1,4 +1,4 @@
--- Generated by Mocodo 4.2.4
+START TRANSACTION;
 CREATE TABLE
   carte (
     PRIMARY KEY (idcarte),
@@ -337,4 +337,5 @@ ALTER TABLE tente_validation ADD FOREIGN KEY (idpartie, num_tour) REFERENCES tou
 
 ALTER TABLE tour ADD FOREIGN KEY (idpartie) REFERENCES partie (idpartie);
 
-ALTER TABLE valide ADD FOREIGN KEY (idcontrainte) REFERENCES contrainte (idcontrainte);
+ALTER TABLE valide ADD FOREIGN KEY (idcontrainte) REFERENCES contrainte (idcontrainte);
+COMMIT;