它是处理磁盘上的文件系统的基础，因为它定义文件系统的管理参数(例如，块的总数、空闲块和根索引节点)。
It provides the basis for dealing with the on-disk file system, as it defines the file system's managing parameters (for example, total number of blocks, free blocks, root index node).
在创建索引时指定的文档模型参数指定模型文件的根元素。
The document model parameter specified at index creation time specifies the root element in the model file.
“大多数搜索引擎似乎试图协助你从干草堆里寻找一根针，”Rajaraman先生评介到，“但我们正在试图做的是帮助您探索这堆干草。”
“Most search engines try to help you find a needle in a haystack, ” Mr. Rajaraman said, “but what we’re trying to do is help you explore the haystack.”
FOT索引类似B -Tree索引，但它有多个根节点和较少的级(B - Tree索引只有一个根节点和更多的级)。
A FOT index is an index that is similar to a B-Tree index, but an FOT index has multiple root nodes and fewer levels. (B-Tree indexes have only one root node and more levels.)
如果他们把索引的根，你不能找到任何从那里，尝试以下搜索在谷歌上。
If they put an index at the root, and you cant find anything from there, try doing the following search on Google.
我怎样使我的博客放到一个文件夹但是我的索引在根？
对于很小的表，只需一个根索引页即可。大表可能会有很多中间页。
For larger tables, the root page stores pointers to the intermediate level index pages or to leaf-level pages.
一根健康棒给你指出健康索引。
一根健康棒给你指出健康索引。
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