业务系统收集的结构化源数据 — 关于患者、医疗索赔和供应商 — 通过提取、转换、加载（ETL）流程输入数据仓库。
Structured source data collected by operational systems—on patients, medical claims, and providers—was fed through extract, transform, load (ETL) processes into the data warehouse.
半结构化数据一般包含标记或其他元素，以从语义上分隔那些隐含了关于相关数据的一些详细信息的相关元素。
Semi-structured data generally contains tags or other elements to separate semantically related elements that imply some details about the associated data.
RepoItem还知道与条目相关联的元数据，因为II CE中的所有条目都可以与属性相关联，属性是关于内容的结构化元数据。
RepoItems also know about the item's associated metadata because all items in II CE can be associated with properties, which are structured metadata about the content.
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