public static string delete(string ma) { return(DAO_Tinh.delete(ma)); }
public static string update(string macu, string mamoi, string ten) { return(DAO_Tinh.update(macu, mamoi, ten)); }
public static string KiemTra_sua(string macu, string mamoi) { return(DAO_Tinh.KiemTra_sua(macu, mamoi)); }
public static string insert(string ma, string ten) { return(DAO_Tinh.insert(ma, ten)); }
public static string KiemTra(string mabp) { return(DAO_Tinh.KiemTra(mabp)); }