In this article, three types of attachments are defined: explicitly bound attachments, referenced attachments using swaRef-typed elements, and unreferenced attachments.
本文定义了三种类型的附件：显式绑定附件、使用 swaRef 类型元素的引用附件以及未引用附件。
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Deferred deletion of DAOS unreferenced objects occurs on a server-wide basis by enabling the "Defer object deletion for n days" setting on the DAOS tab in the server document.
通过启用 Server 文档中 DAOS 选项卡上的 “Defer object deletion for n days” 设置，可以在服务器范围内延期删除 DAOS 未被引用的对象。