查询词典 database access

Based on the analysis, with asp.net and windows 2003 server as os and sql sever 2003 as the database platform to develop a 3 layer structure college online examination system which based on b/s mode. paper indicates the design blue prints, the database implementing mode, at last introducing the solvement of computer breakdown and startegy of choosing problems.

在对在线考试系统进行分析的基础上，利用asp.net技术在windows 2003 server操作系统和sql server 2003数据库平台上开发三层架构的基于b/s模式的高校在线考试系统，并给出软件的设计思想、数据库的实现方式，最后还介绍并发故障、计算机死机的解决方法以及抽题的策略。

Combined with other attribute database, an integrating SOTER Database was accomplished.

另一方面，学术交流和数据交换存在的一个最大的障碍就是描述和记录土壤和土地信息的方法缺乏标准化 [1] 。

Combined with other attribute database, an integrating SOTER Database was accomplished.

应用所建立的数据库作为基本数据源，选取参评因子，采用多层次分析法，进行该地区水稻土生产力评价。

According to the methodology and technology of SOTER at a scale of 1∶1 000 000,a digital spatial database and a simple attribute database at a scale of 1∶200 000 was established in the south of Jiangsu province by integrating relief map, geology map and soil map with Arc/info software.

现有的土壤与地形资料在区域地理与环境研究中是必不可少的，而这些资料经常不能被充分地利用，主要原因是其信息的表达方式很落后-它们常常是零散的、不全面的，并且经常缺乏资源分布的空间与时间序列的信息。

The essence of EDID is to set up a normal behavior fuzzy sub collection A on the basis of watching the normal system transfer of the privilege process, and set up a fuzzy sub collection B with real time transfer array, then detect with the principle of minimum distance in fuzzy discernmethodThe innovation point of this paper is : Put forward the method of EDID, can not only reduce efficiently false positive rate and false negative rate, also make real time intrusion detection to become possibility; have independent and complete character database, according to the classification of monitoring program, design normal behavior and anomaly behavior etc., have raised the strongness of IDS; Use tree type structure to preservation the character database, have saved greatly stock space; in detection invade , carry out frequency prior principle, prior analysis and handling the behavior feature of high frequency in information table, have raised efficiency and the speed of detection, make real time intrusion detection to become possibility; have at the same time realized anomaly intrusion detection and misuse intrusion detection, have remedied deficiency of unitary detection method.

本文的创新点是：通过对特权进程的系统调用及参数序列的研究，提出了基于Euclidean距离的入侵检测方法EDID，不仅能有效降低漏报率和误报率，而且使实时入侵检测成为可能；设计有独立而完整的特征数据库，根据被监控程序的类别，分别设计正常行为、异常行为等，提高了检测系统的强健性和可伸缩性；特征数据库按树型结构存储，大大节省了存储空间；在检测入侵时，实行频度优先原则，优先分析和处理信息表中的高频度行为特征，提高检测的速度和效率，使实时入侵检测成为可能；同时实现了异常入侵检测和误用入侵检测，弥补了单一检测方法的不足。

The algorithm can delete the subsequential sets using the weight and generate new candidate sequential sets using the infrequent sequential sets in the knowledge database. It needn't visit the old database again and again, so it can avoid the problem that candidate sequential sets are very large, and can decrease the run time and memory spaces. It improves the algorithm performance greatly.

该算法利用权值来归约子序列集和利用知识数据库中保留的最小非大序列集产生新的候选序列集，避免了重复遍历原始信息库而造成数据量太大的问题，从而缩短程序运行时间和节约数据存储空间，较好地改进了算法性能。

To ensure data loss cannot occur, the primary database shuts down if a fault prevents it from writing its redo stream to the standby redo log of at least one transactionally consistent standby database.

要确保不发生数据丢失，如果故障导致主数据库无法写重做流到至少一个事务一致性备数据库的备重做日志时，主数据库会关闭。

To ensure data loss cannot occur, the primary database shuts down if a fault prevents it from writing its redo stream to the standby redo log of at least one transactionally consistent standby database.

流到至少一个事务一致性备数据库的备重做日志时，主数据库会关闭。

Firstly, based on the requirement of CFD application in modern turbomachine and grasping FLUENT that is a commercial preprocess code, secondary exploiture, which is a complex coarse that is from designment and optimization of project to exporting result and database management, was finished by utilizing OOP and database technologies, Plentiful time for numerical simulation of centrifugal compressor was saved by using the parameterized program.

首先，本文主要根据CFD 参与现代透平机械的要求，在深刻理解、熟悉了大型商业软件FLUENT 的基础上，采用面向对象技术和数据库技术，针对离心压缩机从设计、优化到方案确定，再到结果输出并进行数据库管理的全过程，进行了二次开发。

When we develop applications, we undirectly handle database, in other words, operations of database is transparent to coder.

在实际实现时，可以直接对数据库进行操作，也可以对每张表建立一个对应的对象，这个对象封装了对数据库的访问，当我们编写应用程序的时候就可以不直接与数据库打交道，访问数据库的事对我们是透明的。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。