... physical storage device 物理存储装置 physical structure data 物理结构数据 physical subpage 实际子页面 ...
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Compare this with non-DBMS systems in which the programmer must know the physical structure of the data.
这个特点与非dbms系统非常不同,在那种系统中,程序员必须知道数据的物理结构。
They may determine the data structure of external interfaces or some physical systems, and therefore represent physical data structures to be transformed within interfaces.
它们会确定外部接口或一些物理系统的数据结构,因此描绘出在接口中进行转换的物理数据结构。
Their physical structure — the order of sibling elements, whether data is stored in attributes or PCDATA-only elements, whether entities are used — is often unimportant.
这些文档的物理结构—兄弟元素的次序、数据是存储在属性中还是在PC DATA元素中、是否使用实体—往往是不重要的。
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