Bussiness ManagementMBAstrategyHuman ResourceMarketingHospitalityE-commerceInternational Tradingproject managementmedia managementLogisticsFinanceAccountingadvertisingLawBusiness LawEducationEconomicsBusiness Reportbusiness planresearch proposal
英语论文题目英语教学英语论文商务英语英语论文格式商务英语翻译广告英语商务英语商务英语教学英语翻译论文英美文学英语语言学文化交流中西方文化差异英语论文范文英语论文开题报告初中英语教学英语论文文献综述英语论文参考文献
ResumeRecommendation LetterMotivation LetterPSapplication letterMBA essayBusiness Letteradmission letter Offer letter
澳大利亚论文英国论文加拿大论文芬兰论文瑞典论文澳洲论文新西兰论文法国论文香港论文挪威论文美国论文泰国论文马来西亚论文台湾论文新加坡论文荷兰论文南非论文西班牙论文爱尔兰论文
小学英语教学初中英语教学英语语法高中英语教学大学英语教学听力口语英语阅读英语词汇学英语素质教育英语教育毕业英语教学法
英语论文开题报告英语毕业论文写作指导英语论文写作笔记handbook英语论文提纲英语论文参考文献英语论文文献综述Research Proposal代写留学论文代写留学作业代写Essay论文英语摘要英语论文任务书英语论文格式专业名词turnitin抄袭检查
temcet听力雅思考试托福考试GMATGRE职称英语理工卫生职称英语综合职称英语职称英语
经贸英语论文题目旅游英语论文题目大学英语论文题目中学英语论文题目小学英语论文题目英语文学论文题目英语教学论文题目英语语言学论文题目委婉语论文题目商务英语论文题目最新英语论文题目英语翻译论文题目英语跨文化论文题目
日本文学日本语言学商务日语日本历史日本经济怎样写日语论文日语论文写作格式日语教学日本社会文化日语开题报告日语论文选题
职称英语理工完形填空历年试题模拟试题补全短文概括大意词汇指导阅读理解例题习题卫生职称英语词汇指导完形填空概括大意历年试题阅读理解补全短文模拟试题例题习题综合职称英语完形填空历年试题模拟试题例题习题词汇指导阅读理解补全短文概括大意
论文作者:www.51lunwen.org论文属性:作业 Assignment登出时间:2013-09-17编辑:yangcheng点击率:3727
论文字数:1388论文编号:org201309131637256478语种:英语 English地区:中国价格:免费论文
摘要:面对各种各样的攻击,尽管数据库系统采取了各种保护措施来防止数据库的安全性和完整性被破坏,保证并发事务的正确执行,但故障仍是不可避免的。因此,数据库的备份与恢复成为一项不可忽视的非常重要的系统管理工作,是整个安全的基础之一。进行数据库备份和恢复能增强系统可靠性,最大限度地减少因硬件、软件故障而造成数据丢失。
数据面临着大量的安全威胁。对于一些军事机密数据库、经济数据等,我们必须采取必要的措施,防止它人非法窃取、篡改。目前数据加密是保证数据安全的最广、相对最可靠的方法,它是数据保护在技术上最重要的防线。数据加密[16]是保护数据在存储和传递过程中不被窃取或修改的有效手段。
Data facing a lot of security threats. For some military secrets database , economic data, etc. , we must take the necessary measures to prevent its illegal theft, tampering. Data encryption is currently the most widely used to ensure data security , relatively the most reliable method, which is technically the most important data protection of defense. Data encryption [ 16 ] is to protect the data storage and transfer process is not stolen or modified effective means. The basic idea is to want to send a message through a variety of transformed vectors form for storage and transport , authorized recipients recover plaintext with the corresponding transformation , those who are not lawful intercept the plaintext is not visible or do not understand, so as to achieve information security purposes. Data encryption system includes different parts of the system to choose what encryption algorithm, encryption size selection , how high the level of security required , the method can collaborate among other factors. In different parts of the system to perform efficient and comprehensive consideration of the balance between security .
其次可以使用不同的加密方法。比如用椭圆曲线密码体制(ECC),其依据就是定义在椭圆曲线点群上的离散对数问题的难解性,从而增强数据库数据的安全性,目前还没有有效的攻击破解方法。关于数据库加密的相关知识在下面将详细介绍。
Second, you can use a different encryption method. Such as using elliptic curve cryptography (ECC), which is defined in accordance with point group on the elliptic curve discrete logarithm intractability of the problem , thereby enhancing the security of the database data , there is no effective attack cracking method. Knowledge about database encryption are described in detail below .
数据库备份是DBA定期地将整个数据库复制到磁带或另一个磁盘上保存起来的过程。这些保存到设备上的数据文本就是后备副本。当数据库遭到破坏后就可以利用后备副本来恢复数据库。网络数据备份策略主要包括全备份、增量备份、差分备份三种方式。
DBA is a database backup the entire database periodically copied to tape or another disk saved in the process . These saved data on the device is a backup copy of the text . When the database is corrupted after the backup copy can be used to restore the database . Network data backup strategy including full backup, incremental backup , differential backup in three ways.