📅 最后修改于: 2020-11-12 04:46:39 🧑 作者: Mango
在本章中，我们将讨论索引的四个主要操作。这些操作在各个时间都是有用的，并在整个软件搜索应用程序中使用。
以下是索引过程中常用的操作列表。
| S.No. | Operation & Description |
|---|---|
| 1 | Add Document
This operation is used in the initial stage of the indexing process to create the indexes on the newly available content. |
| 2 | Update Document
This operation is used to update indexes to reflect the changes in the updated contents. It is similar to recreating the index. |
| 3 | Delete Document
This operation is used to update indexes to exclude the documents which are not required to be indexed/searched. |
| 4 | Field Options
Field options specify a way or control the ways in which the contents of a field are to be made searchable. |