省级农业气象数据库及管理系统的设计与实现

为了使农业气象数据更加规范化、标准化，同时为省级农业气象业务服务系统提供基础数据支持，而进行了省级农业气象数据库管理系统的设计与开发。农业气象数据库管理系统作为中国气象局统一组织设计开发的大型业务软件“新一代省级农业气象业务服务系统”的子系统之一，已在全国省级气象业务单位推广应用。该系统针对省级农业气象数据的组成特征，分类设计农业气象数据库；选用当今流行的桌面分布式数据库语言——Microsoft SQL Server作为数据库系统开发平台，建立农业气象数据标准化存储格式、数据录入和转换方式。同时，基于C/S(Client/Server)模式,开发设计了具有建库、检索、复制、转换等功能的省级农业气象数据库管理系统。     

PB与SQL Server数据库的连接

PB作为目前常用的一种数据库应用开发工具，在连接数据库的方法上，总地来说分为两类：ODBC接口和专用接口。本文以连接SQL Server数据库为例，介绍了PB连接数据库的这两种方法。     

Implementation of the Computer Operating Exam System of Computer Graded Examination Based on C/S

This paper introduces an exam management system, which is applied to the Computer Operating Exam System of Sichuan Computer Graded Examination, aims at the shortage of existing exam ways and exam manager systems. The system bases C/S mode, use SQL Server as background database engine, use Delphi as foreground Development tool, includind data and exam management. It is an independent and comprehensive system, and also can band of existing exam manager system of Sichuan Computer Graded Examination. The system is proposed with emphasis on working-flow, frame, main functions and the solution ways of the key problems.     

论数控技术发展趋势及我国数控产业发展方向

数控技术是当今先进制造技术和装备最核心的技术,使传统的制造业产生根本性的变革.本文结合EMO2005届汉诺威国际机床展览会概况,从高速度、高精度、高效率、模块化、智能化等几方面分析了当今世界数控技术发展的趋势,指出了我国制造业发展方向.     

Chernozem—Soil of the Year 2005

The proclamation of the “Soil of the Year” was made for the first time in Germany in 2005 on occasion of the World Soil Day. Chernozems were selected for this purpose. In this paper an overview of these groups of soils is given. Chernozems are concentrated in the drought region of Central Germany. A standard profile from the core area of Chernozems developed from loess is presented with comprehensive laboratory analysis. Chernozems developed primarily upon carbonatic loess substrates under summer‐dry climatic conditions in an open park‐like landscape with isolated forest stands. The development of Chernozems began as early as the late glacial period, and they were fully developed by the Atlantikum age. The far‐reaching, uniformly thick humus horizons indicate substrate differences in the loess cover, which are partly the result of bioturbation. Within Germany, Chernozems and Chernozem‐like soils make up approx. 3% of the surface area and 5% (approx. 11,000 km²) of the arable land. The results of the Static Fertilization Experiment in Bad Lauchstädt, founded in 1902, clarify the high value of Chernozem for biomass production and the environment. Each loss due to erosion or decrease in surface area reduces the fulfillment of soil ecological functions of the soils and is comparable to a loss of animal and plant species. Therefore, soil scientists and the results of soil research must be more comprehensively implemented for soil preservation, protection, and politics. For acceptance of these goals among the general public and the political‐decision makers, the campaign “Soil of the Year” should give some thought‐provoking impulses.     

PowerBuilder应用开发

本文以一个完整的数据库应用程序的开发为例，通过对开发过程的详细介绍，对PowerBuilder的基本工作原理和编程环境有一个基本的认识，为进一步深入学习PowerBuilder和开发打下基础。     

利用数据库对观光农业游客信息的分析——以广州市为例

指出当前广州市观光农业发展中普遍存在的问题是缺乏对游客市场的调查研究,从游客信息与观光农业发展的相关性出发,设计游客信息数据库的概念模型,并提出了广州市观光农业发展对策。     

基于SQL的森林资源数据库查询优化

SQL语句是数据库应用中一个非常关键的部分，SQL优化对提高数据库的响应速度、减少查询时间具有重要的作用。本文提出了森林资源数据库SQL语句优化的几种主要策略，并通过实验对其进行验证。     

科研成果管理系统

管理信息系统是一个利用计算机软硬件资源,手工作业,分析,计划,控制和决策模型以及数据库的人--机系统.它提供信息支持企业或组织的运行管理和决策功能.科研成果管理系统是高校众多MIS中应用于规范本校科技成果的申报,全面掌握学校近年来科研发展情况,为科技成果奖励津贴的发放提供最直接的依据.本系统由客户端程序和服务器端程序两个部分组成,应用软件工程的方法,细化各个功能模块,设计数据库.本系统用Visual C#.NET,SQL Server 2000作为开发工具,期望开发出高效智能具备现代管理信息水平的信息系统.     

存储过程在个人所得税扣税系统中的应用

数据库管理系统中的存储过程实现了SQL语句的标准化服务器端运行，极大地提高了数据传输与运行的效率。本文介绍了存储过程的实现原理与方法及其具体应用，并提出了程序实现存储过程的解决思路。