資料來源 : Free On-Line Dictionary of Computing

hierarchical database
     
         A kind of {database management system} that links
        records together like a family tree such that each record type
        has only one owner, e.g. an order is owned by only one
        customer.  Hierarchical structures were widely used in the
        first {mainframe} database management systems.  However, due
        to their restrictions, they often cannot be used to relate
        structures that exist in the real world.