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.
代码、电子表格、数据库表等都需要检查，并由此生成原子业务规则，甚至还可能生成全新的数据结构。
Code, spreadsheets, database tables, and so on are examined and give rise to atomic business rules, and potentially entirely new data constructs.
该算法和扫描线算法相比，具有数据结构简单，不需要对众多的表格进行维护和排序，实现思想简洁和适合硬化等优点。
Compared with the scan line algorithm, it has a simple data structure, no need to maintain and sort lots of tables, simple implementation, and fitting for being implemented by hardware.
该算法和扫描线算法相比，具有数据结构简单，不需要对众多的表格进行维护和排序，实现思想简洁和适合硬化等优点。
Compared with the scan line algorithm, it has a simple data structure, no need to maintain and sort lots of tables, simple implementation, and fitting for being implemented by hardware.
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