In fact, these data categories are the real thing, and the hierarchy inside each profile is a virtual copy of the same structure.
实际上，这些数据类别是真实的，而配置文件中的结构则是这个结构的虚拟副本。
PL/SQL is a process language of ORACLE, including a complete set of data categories, conditional structure, loop structure and exceptional processing structure.
PL/SQL是ORACLE的过程化语言，包括一整套的数据类型、条件结构、循环结构和异常处理结构。
The simulation results show that the composition model can reduce the information interference among the different data categories and improve the inferential accuracy of the model.
仿真实验表明该组合模型能降低相邻类别间的信息干扰，提高模型的估计精度。
Further investigations are needed, ideally with prospectively designed data categories, to more fully understand the factors affecting maximum possible survival times for trapped victims.
我们还需要进行深入的研究，最好是根据预先设定数据类别，从而更充分地了解影响被困受害者最长存活时间的各种因素。
Data categories can contain a number of data items, which are linked to the profile items you created earlier on.
数据类别可以包含几个数据项，这些数据项链接到您此前创建的配置项。
Data categories are like abstract base classes; a category might be able to represent all models of car, for instance.
数据类别类似于抽象基类，比如，一个类别可以表示所有的汽车型号。
Data categories are like abstract base classes; a category might be able to represent all models of car, for instance.
数据类别类似于抽象基类，比如，一个类别可以表示所有的汽车型号。
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