Research and realizaion of data structure and database design of commerce information processing system is disscused, take warehouse for example, based on normalization theory of data structure.

以数据结构规范化理论为基础，以数据仓库为例，讨论了商务信息处理系统数据结构和数据库结构的合理设计。

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Now we must create the table structure in the database, which also wipes out the existing tables and data (if there's any) and start from scratch.

现在我们必须在数据库中创建表结构，这也会清除现有表和数据(如果有的话)，并从头开始。

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It offers many new features for application developers, hierarchical data structure support, and improved query capabilities across multiple instances of the database.

它提供了很多面向应用程序开发人员的新特性、分层数据结构支持和改进的跨多个数据库实例的查询能力。

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