SDAI是STEP采用的标准数据访问接口，是针对不同的数据存贮技术而提供的统一的数据存取接口标准。
SDAI is the standard data access interface adopted by STEP, it aims to provide a uniform data access interface standard between different systems.
因为XDP文件是XML文件，所以标准的XML工具、系统接口、以及Web服务可以编辑它，这使得XML数据可以直接被访问。
Since an XDP file is an XML file, standard XML tools, system interfaces, and Web services can work with it, making the XML data directly accessible.
此外，客户还可以通过标准接口(比如sql)来访问RainStor所存储的数据。
Additionally, customers can access data stored within RainStor via standard avenues such as SQL.
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