A good algorithm to design such a hierarchical database consists of two steps, first, to describe real world in E-R model and then, convert it to the model supported by the DBMS.
在设计层次型数据库时，一个较好的设计方法是分二步走：首先利用实体联系方法抽象出现实世界的实体联系模型，然后将实体联系模型变换到具体DBMS 所支持的层次型模型。
In order to support the whole process of design activities, a hierarchical model to represent the functional and geometrical information of welded machine frame is presented.
通过建立一个基于层次数据结构的焊接机架表示模型，表示焊接机架的功能信息和几何信息，以支持焊接机架全过程的设计活动。
This paper provides a hierarchical semantic model for the design of complex products based on existing 3D CAD software.
针对复杂产品的设计建模提出了一个层次语义模型。
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