共查询到20条相似文献，搜索用时 84 毫秒
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冯巧玲 《和田师范专科学校学报》2007,27(4):196-197
SQL注入是黑客攻击某些网站非法获取数据的重要手段之一,本文简单介绍了什么是SQL注入攻击,SQL注入原理,SQL注入的危害及SQL注入的一般步骤,最后提出了针对SQL注入的一些防范措施。 相似文献
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SQL Server作为一个关系数据库管理系统正在被越来越多的商业组织所使用,但SQL Server仍然是被动的数据库管理系统、该文将主动数据库的ECA规则集成到SQL Server中,提出基于SQL Server的主动数据库模式,能够提高SQL Server功能,扩大SQL Server应用领域．根据SQL Server数据处理过程,分析SQL Server的主动数据库特征,并对比主动数据库体系结构给出基于SQL Server主动数据库体系结构,最后结合一个实例说明基于SQL Server的主动数据库的数据处理过程． 相似文献
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本文从SQL注入方法带来的安全隐患展开分析,针对SQL注入技术提出了SQL注入的防范方法,并且对SQL注入带来的隐患提出了解决方案。 相似文献
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通过智能SQL解析动态构造的SQL,并为SQL设置参数随机值,然后在数据库执行这条SQL,可以得到SQL的输入参数及参数类型,还有查询返回列.根据这些数据生成代码,可以为SQL驱动的信息管理等企业应用开发加速,提升开发效率. 相似文献
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张成 《安徽科技学院学报》2015,(2):63-65
文章介绍了SQL注入的原理和基本过程,构造SQL语句进行注入入侵的常用方法,并以ASP网站为例,介绍SQL注入攻击的步骤,并提出针对SQL注入的防范技术。 相似文献
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传统的基于SQL语句的查询操作只是把SQL语句形成一个string,然后通过ado.net传给sql server,返回结果集,存在SQL语句难写易错的缺陷。提出使用LINQ TO SQL来替代传统的基于SQL语句的查询操作在C#.NET中实现数据库的操作,简化数据访问的代码量。解决传统的基于SQL语句的查询操作不足的同时,还可以大大简化复杂度,提高效率。 相似文献
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刘湛 《山西广播电视大学学报》2012,(1):55-56
影响SQL Server运行的因素有很多,合理的分配SQL Server实例内存,选择合适的磁盘分区格式、使用文件组、tempdb数据库的性能调优来调整SQL Server的配置,使SQL Server能够很好地运行。 相似文献
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陈栋 《吉林广播电视大学学报》2014,(10):19-20
SQL注入式攻击已经成为当前黑客最热门两大攻击方法之一。通过非法的SQL语句注入,黑客可以轻易的修改数据库的相关信息,甚至还可以获得Web服务器的更高权限。本文简单介绍了SQL注入的攻击原理,给出了通过设置SQL语句过滤来解决SQL注入的两种方法,并给出了相应的代码和设置步骤。 相似文献
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从SQL语句在Oracle数据库中的执行过程,提出了Oracle数据库性能优化的一些方法。SQL语句在Oracle中执行的过程可分为:分析(Parse)、执行(Execute)和提取(Fetch)三个阶段。使用高效的SQL语句和高效的PL/SQL程序设计,尽可能减少SQL语句分析,以获得Oracle数据库的最佳性能。 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献