Describes each data element within the bulk data store, such as source organization, application support, data summary, index, catalog, or digests.
描述批量数据存储中的每个数据元素，例如源组织、应用程序支持、数据汇总、索引、目录或摘要。
An index entry is created for each complete tag context for each data element — that is, the concatenation of every tag leading up to the data element.
为每个数据元素的所有完整标记上下文创建索引项—即，并置数据元素前的每个标记。
An index entry is created for the concatenation of the two preceding items (tag context plus data element).
为前两项(标记上下文加上数据元素)的并置创建索引项。
If the data is stored sequentially, the time to find the item is proportional to the size of the list. For each element, a hash function calculates a number, which is used as an index into the table.
如果数据是序列存储的，从中查询一个项的时间取决于数据列的大小。
If the data is stored sequentially, the time to find the item is proportional to the size of the list. For each element, a hash function calculates a number, which is used as an index into the table.
如果数据是序列存储的，从中查询一个项的时间取决于数据列的大小。
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