查询词典 base data

It's quite necessary to build a data base system to manage the surveillance data.

建立一套数据库系统将所有的检测数据统一管理起来已经是十分必要的。

Data in the base tables of the data dictionary is necessary for Oracle to function.

数据字典基表中的数据是 Oracle 正常工作所必须的。

A name used to identify the data unit in a data base.

用于标识数据库中数据单位的名字。

Database or Data Base is constructed for the purpose of information retrieval, is a combination of data files in a unit.

数据库是为了信息检索而建立的系统，是一个单位的文件的结合体。

Studying the positive definitiveness of the covariance matrix from discrete data is important to design the sampling plan and provides the base for the data analysis.However, there have been few outcomes about the positive definitiveness of covariance matrix, most of which have been restricted to the Covariance-matrix of continuous sample.

研究离散型样本协方差矩阵的正定性有助于判断是否可以降低样本的维数，有利于优化抽样个数，为抽样调查的优化设计方案提供一定的理论基础；为基于特征根的多元统计分析提供理论指导。

However, the development and the application of data base system cannot satisfy the requirement of the information system. From abundant existing data resource, people cannot acquire the potential association rapidly and efficaciously.

然而，现有数据库系统的开发应用无法适应人们对信息系统的高要求，无法从现有数据资源中快速、有效地获得信息的潜在联系。

In the first place, on the base of studies concept ascending and attribute dependency, we forward a method to select attribute value partition, which can effectively resolve the problem of minimum faith and minimum support, in order to induct potential knowledge from standard discrete symbolic data, the dissertation studies join operation for generating candidate set and delete operation for deleting redundant equivalence class, and propose an recursion algorithm to realize highly generalization of data.

首先在研究概念爬升方法和Rough集理论中属性隶属度原理的基础上提出了一个划分属性值区间的算法，该算法能够有效的解决最小支持度问题和最小信任度问题。进而为了从已离散化的数据中概括出潜在的规则，研究了生成侯选集的交运算方法和排除冗余等价类的删除方法，然后利用循环推进机制实现对数据的概括。

Further, based on the data from Statistical yearbooks and tables, the author edits the Extension of the Energy Input-holding-Output table of Xinjiang in 2004 and speculate the coefficient of inter-industrial impact and sensitivity, setting up crucial data base for studying the energy and economic issues in Xinjiang province.

在此基础上，根据各种统计年鉴和报表中的数据进一步编制了2004年新疆能源投入占用产出延长表，测算了产业间的影响力系数和感应度系数，为研究新疆能源和经济问题奠定了重要的数据基础。

Secondly, its deep research and design is finished about some key technologies of the software for the system. These include the high capability of multi-layer database system, the software of intellectualized electrical simulation drawing, the interlinkage and the real time data exchange of the heterology system, the data exchange with external and the share platform base on web pattern, and the software of system supervising. The software platform is made to fell in with system demand on the basis of current developmental tendency of technique.

其次，对变电站综合自动化中的一些软件关键技术进行深入的研究和开发，这些关键技术包括：高性能多层数据库体系、智能化电气模拟图绘制软件、异构系统互连与实时数据交换、基于web模式的对外信息交换与共享平台、系统安全防护软件，结合目前技术发展的趋势和本系统的实际需求，研制出符合系统要求的软件平台。

In this paper, first, we discuss the mathematical model and application of data warehouse on the base of deep research on business intelligence and data warehouse architecture.

首先，本文回顾了商业智能的概念和数据仓库的基本原理，在此基础上研究了数据仓库的数学模型及其应用。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。