Finally, in order to improve the efficiency and accelerate the retrieval process, we give some insight into relevant image database index mechanism. Especially, we discuss thoroughly about M-Tree index mechanism, which we applied in our CBIR system.

There are many kinds of database index, such as B+-tree, AVL tree and SB-tree, which are built now, but through which we could not to search data on many keys.

目前数据库索引方法比较多，包括B+-树、AVL树和SB-树等，但都不能很好地解决数据库的多键值查询问题。

The author uses the mechanism of map symbol database index plus symbol description information buffer to prove the efficiency of accessing symbol description information in multiple map symbol databases;

文中采用地图符号库索引加缓存符号描述信息的机制，提高了访问多地图符号库中描述信息的速度；

Note that this is usually not the only attribute with a database index.

注意，通常情况下，CSCDISIS属性并不是惟一有数据库索引的属性。

Access of Database with Index by High-Level Language

高级语言访问带索引数据库的方法

The system take R-tree as spatial database index structure, integrated the technique of multimedia and built workflow business process model and de-cision support model.

系统以R-树作为空间数据库的索引结构，综合采用多媒体技术，并建立相应的工作流业务过程模型和决策支持模型。

Based on the studies of super-high concurrency of B~ ( link)-tree, a novel scheme that combined B~ ( link)-tree-based database index with multiversion technology was provided.

在对B链树极高同步性能研究的基础上，提出了一种将B链树作为数据库索引并和多版本技术相接合的一种新颖方案。

Searching in the correct database or index is also important.

在正确的数据库或索引中搜索也是重要的。

This paper has introduced the design methodology of main memory, database index in fire monitoring system, and compared the system running efficiency in these two situations.

本文介绍了消防监控系统中内存数据库索引的设计方法，并对比了两种方法下的系统运行效率。

We started with a blind placement strategy of putting the database index files on SSD storage, but that generated only a modest improvement ( less than2x).

首先采取随意安排的策略将数据库索引文件放到SSD存储上，但是这样做只获得不多的性能提升（不超过2倍）。

Research on Main-Memory Database Index Mechanism and its Optimization

主存数据库索引机制及其优化研究

As mentioned before, a database index is critical to performance.

正如上面所提到的那样，数据库索引对性能来说十分关键。

This thesis aims to explore new ways of image database index technique of content-based image search engine after regional weighted entropy is applied to image feature extraction.

本文将区域加权信息熵应用于图像特征提取，探索基于内容图像搜索引擎图像库索引技术新途径。

Secondary Link as Result of Database Index Searching by ASP Technique

用ASP技术实现数据库检索结果的二次连接

By the research of database index, A new and efficient database index built by multi-dimension linked lists is given out, and also main problems of the database index are discussed there.

通过对多维链表的研究，提出一种全新的、基于多维链表的、可以同时在多个属性上建立高效数据库索引的方法，并对这种索引方法的主要问题进行了比较详细的讨论。

This article introduces the concept and model of a component catalog database to manage component database.

论文为管理分布式构件库提出了构件目录库的概念和模型.

Start RMAN and connect to the target database.

启动并连接到目标数据库.

Start RMAN and connect to a target database.

启动RMAN并且连接到目标数据库.

Data migration is a mapping between source database and target database.

数据迁移可以看作是实现从源数据库表到目的数据库表的映射.

The RMAN backup and recovery environment is preconfigured for each target database.

对每个目标数据库来说RMAN的 备份恢复环境都要预先配置.

You must have permission to create a table in the target database.

必须有在目标数据库中创建表的权限.