查询词典 database

The algorithm needn't generate candidate itemsets and scan database, because it employs FP-Tree to store trasanctions in database compressedly and takes full advantage of the characteristic of FP-Tree.Consequently,the complexity of space and time the algorithm used is reduced obviously in the procedure of data mining.In a thorough experimental analysis of our algorithm on real and synthetic data,we isolate the effect of the individual components of the algorithm. Our performance numbers show that MFP-Miner outperforms previous work.

该算法利用频繁模式树来压缩存储数据库中的事务，并充分利用频繁模式树的特点，在挖掘最大频繁项目集的过程中不需要产生候选项目集和扫描数据库，从而减少了算法在挖掘过程中使用的存储空间和计算时间，通过实验结果显示，该算法的性能优于同类算法。

When should searching engine spider to get when requesting a certain URL 404 condition are responded to, know this URL namely already invalidation, index no longer this webpage, feedback to delete this URL denotive webpage from inside index database to data center, of course, delete a process to need for a long time likely, and when should searching engine to get 200 condition are responded to, can think this Url is effective, can index, can collect its index database, such result is these two different Url have identical content: Define the content of 404 wrong pages oneself, this meeting is brought about appear duplicate webpage problem.

当搜索引擎蜘蛛在请求某个URL时得到404状态回应时，即知道该URL已经失效，便不再索引该网页，并向数据中心反馈将该URL表示的网页从索引数据库中删除，当然，删除过程有可能需要很长时间，而当搜索引擎得到200状态回应时，则会认为该url是有效的，便会去索引，并会将其收录到索引数据库，这样的结果便是这两个不同的url具有完全相同的内容：自定义404错误页面的内容，这会导致出现复制网页问题。

The second step, as variable content to establish a database file, the database file should contain the variable data business card printing and membership card making all the required information, requirements that correspond one-to-one with the added items and cannot be disnature.

第二步，为可变不步不天拆除数据库文件，该数据库文件不该包含可变数据制卡和会员卡制息所需的全部陈闻，请求所补充的项纲不一差答，不克不及错位。

By this ERD, the physical database could be created using Microsoft SQL or other database software, which could provide highly effective query operation to serve the agricultural production.

依据此图可以在Microsoft SQL或其他数据库软件下建立物理的数据库，建立良好的查询，为农业生产等应用提供服务。

A database schema designer that can render ERD and UML diagrams, import and export to XML and SQL for various database servers.

这是个数据库模式设计工具，能显示ERD和UML图，以及使用XML和各种数据库服务器的SQL的进行导入/导出操作。

A database schema designer that can render ERD and UML diagram s, import and export to XML and SQL for various database servers.

这是个数据库模式设计工具，能显示ERD和UML图，以及使用XML和各种数据库服务器的SQL的进行导入/导出操作。

This thesis deeply researches the J2EE security strategy on the application tier of enterprise system. The security strategy predigests the information security model and meets the security requirements expediently. But there are some disadvantages when the security requirements become more complex. The expositive security on the Web-Tier can not offer more information for authentication; there is no authentication for EJB-Tier to use, make the EJB-Tier depend on the Web-Tier; J2EE uses database or application server to manage the role information. Use database to manage the role information will increase the complex of enterprise application, and the way of application server will reduce the ability of migrate other J2EE platform. To solve these problems, the thesis designs an improved security strategy model.

本文从企业级系统应用层安全的角度出发，深入研究J2EE多层体系结构的安全策略模型。J2EE提供的安全策略简化了系统的信息安全模型，能够很方便地满足基于J2EE的分布式应用系统的安全需求，但是在面对更加复杂的安全需求时，J2EE安全策略在验证授权和角色管理中还存在不足之处：其在Web层的声明式验证机制无法为用户提供更多验证信息，可扩展性较差；在EJB层缺少业务逻辑层可供采用的验证机制，而是借助于Web层的验证机制，其耦合程度较高有悖于业务逻辑分离于表现逻辑的原则；在角色管理方面，J2EE采用数据库或者应用服务器来管理角色信息，其中，数据库管理角色的方式增加了应用开发的复杂度，应用服务器管理角色降低了系统的可移植性，两者都具有片面性。

It contains forset tree genome database information, including information on genetic maps, PCR primers, DNA sequences, images, laboratory protocols, genome software, and instructions for submitting data to the TreeGenes database.

该网站提供了森林植物的基因组数据库的信息，包括基因图谱的构建，PCR引物，DNA序列，图象，实验室方法，基因组软件，以及向树木基因组数据库提交数据的指导。

Ribon has database itself that is used to manage all special data, but it is not fit for domestic factories, furthermore, its openness is also limitary, dont surport the openness and interconnection of morden popular database, so studying and developing Tribon is necessary and practical.

RIBON软件本身具有专门管理各个专业数据信息的数据库，但它不适用于国内的造船厂，而且他的开放性也很有限，不支持现代主流数据库的开放互连功能，因而，对TRIBON软件进行研究和开发是很有必要和实用价值的。

MOES partition orange' yield to seven subsystems, viz. breed' choice, to alter earth and build orchard, to breed seeding, planting and engrafting, field' manage, prevention and cure of the plant diseases and insect pests, to pick and store.Knowledge's denotation form, viz. knowledge of the description, data, rule, aggregation etc were adopted.Some expert' decision-making sustaining systems, for example, soil' information systems, hyper text database, photograph database, knowledge' rule-base etc are used as supple mentary means.The methods of "bring","decision-making tree" and "weighted illegible logic", to construct five decision-making modules, viz. the decision-making of breed, a period of seeding time, planting density, fertilizer and plant diseases and insect pests were also adopted.

MOES将柑桔生产分为品种选择、改土建园、繁育壮苗、定植与嫁接、田间管理、病虫害防治、采收与贮藏7个子系统，采用描述型知识、数据型知识、规则型知识、集合型知识等知识表示形式，配以土壤信息系统、超文本数据库、图片数据库、知识规则库等专家决策支持系统，采用&产生式&、&决策树&和&加权模糊逻辑&的方法构建了品种决策、播期决策、定植密度决策、肥料决策和病虫害诊断五个决策模块。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。