This is a more normalizedschema than the four-table schema option, so that repeated storage of identical keywords and categories is avoided.
与4表模式选项相比，这种模式更符合范式，所以可以避免重复存储相同的关键词和类别。
2
Providing a normalized data schema enables new types of data to be integrated into the system with relative ease.
实现一种规范化数据方案能够使新数据类型以相对简单的方式整合到系统中。
3
In addition, by using an industry standard "star schema", rather than a more normalized table structure, the data warehouse is optimized for efficient queries and quick response times.