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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
XFD includes the relative XFD and the absolute XFD, in which absolute key and relative key are the particular cases.
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The absolute key to accurate scope and price forecasting is sound client-furnished information for the courseware, based on a thorough task analysis.
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| | Keys are an essential part of database design,they are fundamental to data models and conceptual design. Keys have also proven to be useful for indexing ,archiving XML data as well as for designing relational storage. In this paper we discuss the definition of keys for XML documents ,involving the concept of a absolute key,relative key and strong key. We also give reasoning about the implication of keys for XML. | | 关键字是数据库设计的一个重要部分,它们是数据模型和概念设计的基础。关键字对索引、XML数据的 存档以及设计关系存储都是非常重要的。本文主要提出了XML文档关键字的定义,包括绝对关键字、相对关键 字以及强关键字的概念,同时给出了关键字的推理规则。 | | 文摘来源 | |   |
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