查询词典 database

It also supports high concurrency, with thousands of users operating on the same database at the same time.

它也支持高强度的并发操作，可以同时允许数以千计的用户在同一个数据库进行操作。

In database software concurrency requires additional logic to ''.

在数据库软件中，并发运行需要附加逻辑以''。

Concurrent Engineering absorbs computer technique , database technique , network technique under the support of CAD, CAM, CAPP and CAE, considers conception form , scheme analyses , detail design, production, after service , production rejects all factors, resolves effetely lots of defects such as difficulty of data exchange , design changing frequently , cost high, long cycle for design and so on.

摘要并行工程是在CAD，CAM，CAPP和CAE等技术支持下，吸收了当前迅速发展的计算机技术、数据库技术、网络技术，在设计时综合考虑产品开发中的概念形成、方案分析、详细设计、生产制造、售后服务、产品报废等所有因素，有效解决了系统之间数据交换难，设计更改频繁，成本高，设计周期长等缺点。 DFM是并行工程的关键技术之一，在设计一开始就把制造系统的因素添加到设计过程中去，并从制造可行性的角度对设计进行分析评价，使设计满足制造要求，降低加工时间和生产成本。

The first has to do with many users accessing the database concurrently.

首先需要做的很多用户访问数据库兼任。

The optimization methods of database SQL query were studied and some available query optimization Methods were given out as follows: The incompatible data type should avoid to be used; More redundancy search parameters should be given as join condition in join query; In some condition, the number of note hitted to target was estimated by optimizing implement using the average density; Some other maths operating symbol should avoid to be used as condition parameters in WHERE clause; Some operating symbol and its sentence should avoid to be used also; When the cluster function was used,the WHERE clause should be paied attention to more,and so on.

作者单位：（重庆工学院商贸信息学院，重庆 400050）摘要：数据库SQL查询语句的优化，须注意：避免使用不兼容数据类型；连接查询中应多给连接条件提供一些冗余的搜索参数；某种条件下优化器只能使用其平均密度以估计命中的记录数；避免对WHERE子句中条件参数使用其它数学操作符；避免使用某些操作符及相应语句；聚簇函数的使用应注意WHERE子句。

Each with it's own configuration and database.

每一个与它本身的配置和数据库。

You have to create and configure the database at your end.

你必须创建和配置在您的最终数据库。

This sort of defects is named as Database Schema Understanding Confliction,or Understanding Confliction for short.

当前对传统软件的测试研究已经相当深入。然而数据库应用系统的测试要比传统软件的测试复杂的多。

Database is the core part in information system , which is a congeries of information .

数据库系统是计算机信息系统的核心部件，作为信息的聚集体，其安全性至关重要。

As the congeries of information and the core of computer information ,the security of database becomes more and more important .

数据库作为信息的聚集体，是计算机信息系统的核心部件，其安全性至关重要，关系到企业兴衰，国家安全。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。