还包括有数值型、日期型和货币型数据。

It also includes numeric, date, and monetary data.

youdao

数据可以是不同类型的，例如数值型、字符型或日期型。

This data can be of different types, such as Numbers, characters, or dates.

youdao

但是最简单的数据库并不要求使用所有允许的类型，通常只需要保存数值型、字符型和日期(或时间)数据。

But most simple databases don't require the full range of allowed types, and often they need to store only numerical, character, and date or time data.

youdao

这并不是一个主要的问题，除非你使用的类型是日期型，因为ruby的日期型的数据实例化起来非常慢。

This isn't a major issue unless you are using dates, as ruby's date class is very slow to instantiate.

youdao

这并不是一个主要的问题，除非你使用的类型是日期型，因为ruby的日期型的数据实例化起来非常慢。

This isn't a major issue unless you are using dates, as ruby's date class is very slow to instantiate.

youdao