public RelationDefInfo CreateRelation(string lpszName, string lpszRelTable, string lpszRelColumn)
        {
            RelationDefInfo indexInfo = new RelationDefInfo(lpszName, m_strName, lpszRelTable, lpszRelColumn);

            return(RelationAppend(indexInfo));
        }
        public bool EnforceRelation(RelationDefInfo relInfo)
        {
            var relationFields = m_TableFields.Where((f) => relInfo.RelationFieldByName(f.m_strName) != null);

            return(relationFields.Any((rf) => (rf.DbColumnNull())) == false);
        }
        private RelationDefInfo RelationAppend(RelationDefInfo relationInfo)
        {
            m_TableRelations.Add(relationInfo);

            return(relationInfo);
        }