pool::DbColumn Node1 pool::DbColumn - m_offset - m_nElem - m_opts - m_size - m_type + DbColumn() + operator=() + DbColumn() + DbColumn() + ~DbColumn() + isValid() + name() + typeName() + options() + offset() + size() + nElement() + typeID() + toString() + fromString() + typeName() - DbColumn() Node2 std::string Node2->Node1 -m_typeName -m_colName Node3 std::basic_string< char > Node3->Node2