然后是数据提取工具，可以从网页上的表格、列表和其他数据结构中提取数据。
Then there are the data extraction tools which allow you to extract data from tables, lists and other data structures on the webpage.
您可能已经听说过 DB2 Viper 的新架构，这种架构支持表格和分层数据结构。
You've probably heard the buzz about DB2's V9 -- IBM's first database management system to support both tabular (SQL-based) and hierarchical (XML-based) data structures.
用于定义数据结构的接口是电子表格与数据库的混合。
The interface for defining the data structure is a mix between spreadsheets and databases.
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