这些指导原则往往会规定如何设置不同类型数据的格式，或文本应采用哪种颜色和字体。
The guidelines often dictate how to format different types of data or what color and font to use for text.
如前所述，SDO提供了对不同类型数据的统一访问，XML仅是其中的一种数据类型。
As stated previously SDO provides uniform access to data of various types, only one of which is XML.
数据仓库还可以包含不同类别的数据。
A data warehouse also contains different categories of data.
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