查询词典 database key

NET development environment on the back-end database technology and some of the key source code described in detail.

NET旳开发环境对后台数据库关键技术和部分源代码进行了详细说明。

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。

Under the circumstances, this dissertation chooses the key problem in urban traffic signal control-signal timing parameters and optimization methods as its research target. This dissertation is consisted of introduction, run characteristic analyze of mixed traffic flow, collection of database, canalization design, design of signal phase, optimization methods of signal timing parameters of mixed traffic, and conclusion and expectation.

在这种背景下，本论文选择城市交通控制系统的核心问题——信号配时参数及其优化方法作为主要研究内容，包括绪论、混合交通流运行特性分析、数据采集与分析、渠化设计及信号相位设计、混合交通流信号配时优化方法研究和全文总结与展望六部分内容。

Key words : LAN; Files Share; Catalog Chare; Retrieval System; File Transfer; Database

提供浏览和数据库的操作，所以硬件要求不高，但是基于目前计算机，配置也相当高，需要的配置表2所示。

And then, this paper studies another key technology of the embedded database: high efficient SQL complier.

然后，本文研究了嵌入式数据库的另一个关键技术： SQL 编译器。

Based on the principle of advance, adaptive, reliability, high efficiency and flexibility, the general configuration strategy and the key technology has been deeply analyzed and optimized with the systematic and community in general and adaptive and contraposition in detail. The harmonic in both respects has been realized technically and the contradiction between adaptive and community solved. With the synthetic developing tool based on the database, the CAPP system called synthetic development CAPP which is of the properties of synthetic, modular redeveloped and integrated has been developed.

本论文以提高系统的先进性和实用性以及高效，灵活为基本原则，对CAPP的总体构成策略及其关键技术进行了深入地分析和优化，宏观上充分体现系统性和通用性，微观上切实体现针对性和适应性，技术上实现二者的协调统一，较好地处理了适应性与通用性这对既相互关联、又相互制约的矛盾；采用基于数据库的综合开发工具模式，研究并开发了综合式、模块化、具有二次开发和一定集成功能的CAPP系统——基于数据库的典型零件CAPP综合开发系统。

In order to enhance the calculation"s efficiency, the enterprise need a system to solve this problem, and the system"s key aspect is a database which can converser those information effectively.

为了提高汽轮发电机性能计算效率，企业急需一个可以支持企业进行信息管理、分析计算的系统，系统的核心部分便是能完整保存这些信息及分析计算结果的数据库。

Cotton bollworm is more serious pest in cotton belt of Xinjiang, China. In order to guarantee the biggest commercial cotton belt sustaining and healthy, Information project of pest monitoring and prediction is carried out in this commercial cotton base. In this research, we are focusing on automatical data acquisition, data delivery, design and construction of database, data processing and data display and forecast based on GIS. Key technologies and difficulty are explored, which is built the manipulable technologies and management platform for regional monitoring and prediction of cotton bollworm.

棉铃虫在新疆棉区危害逐年加重，为保障我国最大商品棉基地的可持续发展，开展了优质棉基地植保信息工程研究，本文结合新疆植保体系发展和未来新技术的动向，重点集中在有害生物数据自动化采集、数据远距离传输、数据库设计和数据库建设、模型处理和GIS系统在预测和信息发布上的应用，探索植保信息工程建设中的难点和关键技术，为区域化棉铃虫监测和预警提供技术保障和管理平台。

As a special plan, it is highly summarized the basis for mapping the city's main achievements in recent years, pointing out the current development trend of the information age, and from the organization, financial, technical, security and other aspects of proposed safeguards, in order to Hebi City the completion of the socialist market economic system and practical basis for mapping the local management system and operational mechanism to achieve 1:5000 digital topographic map of the city's coverage, 1:2000,1:1000 and 1:500 scale digital topographic map series covering the key areas and the current trend of dynamic, fast updates, and built municipal basic geographic information and data systems and their transmission network system, and build e-government improve the Hebi City-based natural resources and spatial geographic information database, to build "digital Hebi" geo-spatial information infrastructure framework, and can basically meet the economic and social development of basic surveying and mapping needs of protection and support.

作为专项规划，它高度总结了该市基础测绘工作近年来所取得的主要成就，指明了当今信息化时代的发展趋势，并从组织、财力、技术、安全等方面提出了保障措施，为鹤壁市建成适应社会主义市场经济体制和本地实际的基础测绘管理体制和运行机制，实现1：5000数字化地形图的全市覆盖，1：2000、1：1000及1：500数字化系列比例尺地形图的重点区域覆盖和现势性动态快速更新，建成市级基础地理信息数据体系及其传输网络体系，建成完善鹤壁市电子政务自然资源与空间地理基础信息库，构建"数字鹤壁"地理空间信息基础框架，以及基本满足国民经济和社会发展对基础测绘的需求提供了保障和支撑。

One of the key functions performed by database administration.

效能监视是资料库管理的主要工作

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。