With relational tacit knowledge, information could be fully known, exchanged and used, but isn't for contingent reasons.
有了相关联的隐性知识，信息得以被充分了解、交换和使用，而非出自偶然原因。
2
A fullyrelational database schema would require hundreds of tables to represent PDBML.
一个纯关系型的数据库模式将需要数百个表来表示PDBML。
3
A true relational DBMS would allow for a fully normalized database at the logical level, while providing physical storage of data that is tuned for high performance.