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Storage and Querying of E-Commerce Data

机译:电子商务数据的存储和查询

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摘要

New generation of e-commerce applications require data schemas that are constantly evolving and sparsely populated. The conventional horizontal row representation fails to meet these requirements. We represent objects in a vertical format storing an object as a set of tuples. Each tuple consists of an object identifier and attribute name-value pair. Schema evolution is now easy. However, writing queries against this format becomes cumbersome. We create a logical horizontal view of the vertical representation and transform queries on this view to the vertical table. We present alternative implementations and performance results that show the effectiveness of the vertical representation for sparse data. We also identify additional facilities needed in database systems to support these applications well.
机译:新一代的电子商务应用程序需要不断发展且稀疏的数据架构。传统的水平行表示法不能满足这些要求。我们以垂直格式表示对象,将对象存储为一组元组。每个元组包含一个对象标识符和属性名称-值对。模式演变现在很容易。但是,以这种格式编写查询变得很麻烦。我们创建垂直表示的逻辑水平视图,并将对该视图的查询转换为垂直表。我们提出了替代实现和性能结果,这些结果表明了垂直表示对于稀疏数据的有效性。我们还确定了数据库系统所需的其他功能,以很好地支持这些应用程序。

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