数据库

The article will mine Data-Item set compression to a Boolean Vector Matrix.The algorithm only needs to scan the database one time and rational use of data storage structure so that it would not generate a large number of candidate sets.

将挖掘的数据事务集压缩到一个布尔型向量矩阵中，只需扫描数据库一次，合理利用数据存储结构，且不会产生大量的候选集。

In this paper it analyzes the execution process of SQL statement in Oracle database and finds out that reducing times of SQL statement parsing and optimizing CBO are the emphases of SQL performance tuning.Then it validates the key role of using bound variable and cache cursor in enhancing performance of SQL with example.

从分析ORACLE数据库中SQL语句执行原理入手，指出减少SQL语句的解析次数和优化CBO是SQL性能优化的重点，并用实例验证了使用绑定变量和高速缓存游标在提高SQL性能方面的重要作用。

Their first competition that is recorded in our database was in England - Bournemouth.

他们的第一次竞争，这是记录在我们的数据库是在英国-伯恩茅斯。

The database is new technology of data management, is important branch of computer science.

数据库是数据管理的新技术，是计算机科学的重要分支。

Make use of the network and the database techniques, combine the hardware price widespread slump and breadths to take the beneficial advantage that the net constucts strongly currently, according to the B/ S mode research develops to gather the management, examination in the integral whole of the on-line examination system this ASP application procedure.

利用网络和数据库技术，结合目前硬件价格普遍下跌与宽带网大力建设的有利优势，基于B/S模式研究开发了集管理、考试于一体的在线考试系统这一ASP应用程序。

Make use of the network and the database techniques, combine the hardware price widespread slump and breadths to take the beneficial advantage that the net constucts strongly currently, we developped to try a database according to the B/ S mode research with the on-line examination system this ASP application procedure.

利用网络和数据库技术，结合目前硬件价格普遍下跌与宽带网大力建设的有利优势，我们基于B/S模式研究开发了在线考试系统这一ASP应用程序。

The professional content management system, including the papers submitted papers to amend, review papers and user management In the development process, the attention to bring it into conformity with the operation of business processes and systems to the comprehensive, universal, making the system not only applies to an educational institution In the development of methods of choice and chose a life cycle with the prototype of the method of combining law, follow the system research, systems analysis, system design and implementation of four major stages of system design, and in the specific design, to take the evolution of Prototype, with the use and users of the system have deepened the understanding of a certain part or parts of re-analysis, design, implementation In the development of the choice of language, using mainly carried out ASP programming language development, the use of SQL databases, so as to ensure data integrity and consistency This results mainly from system analysis, system design, systems implementation and use of several areas are introduced

本系统管理内容专业，包括论文提交、论文修改、论文审核以及用户管理等等。在开发过程中，注意使其符合操作的业务流程，并力求系统的全面性、通用性，使得本系统不只适用于一家教育机构。在开发方法的选择上，选择了生命周期法与原型法相结合的方法，遵循系统调查研究、系统分析、系统设计和系统实施四个主要阶段进行设计，而在具体的设计上，采取了演化式原型法，随着用户的使用及对系统了解的不断加深，对某一部分或几部分进行重新分析、设计、实施。在开发语言的选择上，主要利用ASP 编程语言进行开发，使用SQL数据库，从而保证了数据的完整性与一致性。

Workers used a powerful broiler database established in 1984 to investigate the problem.

自1984年，斯托蒙特实验室的工作者们就建立并使用了成熟高效的肉鸡数据库系统。

Jane Brophy, Altrincham and Sale West Parliamentary spokeswoman, said: The expensive identity cards scheme is based on the Government storing large amounts of information about each one of us on a central database.

简brophy ， altrincham和销售西议会发言人说："昂贵的身份证计划的基础上，政府储存大量的资料，我们每个人对一个中央数据库"，但在2007年，政府从一个偶然的数据丢失危机到另一个。

The system , according to the approach and method of the software engineering on geography information system ,is under scientific system analysis and design combining with Duoluokou Market Information System's self-characteristic and is based on Ajax. Ruby on Rails framework will be applied to manage the date information. Such framework provide several ways to record data information and organize them in an efficient way and to do management, update, maintenance on them; Date information are visible that means the framework provide some operating function on map such as maximum, minimum and brose, user can use the button above the map to imply those function; Information query and brose, a corresponding entity will be offered according to the input terms and its location in the map.

系统按照地理信息系统软件工程的思路与方法，结合舵落口大市场信息化建设的自身特点，对其进行科学的系统分析与设计，并以Ajax技术为基础，利用Rails框架实现了数据信息管理，即运用多种方式录入数据信息，以有效的数据组织形式进行数据库管理、更新、维护；实现了信息查询与浏览，即提供根据输入的条件查询其对应的实体的相关属性；实现了数据信息可视化，即提供了放大、缩小、漫游等基本地图操作功能，用户可以利用地图上方按钮来方便的使用这些功能以及在地图中定位与显示所查询的目标物。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。