Why would a reverse index be useful when the leading column of the index is generated from a sequence?

当索引第一列由序列产生，一个逆序索引有什么用？

youdao

Depending on the kinds of LIKE queries you need to do, you may be able to use the reverse index technique to narrow the search space.

根据各种一样，你需要做的查询，您可以使用反向索引技术来缩小搜索空间。

youdao

A global reverse index is simply a design where you create a map whose key is the search term, and the value is the list of keys containing an attribute with that search term.

一个全局反向索引仅仅是一个设计，其中创建的映射的键是搜索关键词，且其值是包含属性与搜索关键词的键列表。

youdao

The other party to the swap would receive the same cash flows in reverse, pay the quarterly index return and receive LIBOR plus the spread.

FORBES: A Guide To Real Estate Derivatives

The weekly pattern of lower highs and lower lows in the dollar index will take some time to reverse, so those trying to pick a bottom in the dollar should be very careful.

FORBES: Chinese Yuan Takes Global Stage

Chart Analysis : The iShares MSCI Brazil Index Fund ( EWZ) completed a reverse head-and-shoulders bottom formation last Friday, having closed above the neckline, line a.

FORBES: 2 Battered BRICs Find a Bottom