As mentioned, reference data can be organized and maintained in persistent storage, which can be a database or a file in the file system. 如上所述,可以在持久性存储(它可以是一个数据库,也可以是文件系统中的一个文件)中组织和维护参考数据(RD)。
There are three broad uses for reference data : operands, historic artifacts, and shared collections of data. 对于引用数据有三个主要的应用:操作数,历史数据,和共享的数据集合。
Until recently, this reference data resided in either a file or a database and was accessed through queries. 直到最近,此类参考数据(RD)一直驻留在文件或数据库中,需要通过查询对其进行访问。
Actually the former approach can also benefit from the reference data caches. 实际上前一种方法也能从引用数据缓存中获益。
When reference data is dynamic, values can be added frequently over time to support new business requirements. 如果参考数据(RD)是动态的,那么可以在不同时间频繁添加值以支持新的业务需求。