public int GetYear(int studentId)
        {
            DAExternals da          = new DAExternals();
            int         studentYear = da.GetYear(studentId);

            return(studentYear);
        }
        public DataTable GetCatalogInfoPerYear(int studentId, int studyYear)
        {
            DAExternals da           = new DAExternals();
            DataTable   tableCatalog = da.GetCatalogInfoPerYear(studentId, studyYear);

            return(tableCatalog);
        }
        public DataTable GetStudents(int externalId)
        {
            DAExternals da            = new DAExternals();
            DataTable   tableStudents = da.GetStudents(externalId);

            return(tableStudents);
        }
        public DataTable GetAcceptedRequests(int externalId)
        {
            DAExternals da            = new DAExternals();
            DataTable   tableRequests = da.GetAcceptedRequests(externalId);

            return(tableRequests);
        }
        public DataTable GetStudents(String studentName, String studyGroup, int externalId)
        {
            DAExternals da            = new DAExternals();
            DataTable   tableStudents = da.GetStudents(studentName, studyGroup, externalId);

            return(tableStudents);
        }
        public void InsertRequests(int externalId, int studentId, String reason)
        {
            DAExternals da = new DAExternals();

            da.InsertRequests(externalId, studentId, reason);
        }