共查询到18条相似文献,搜索用时 78 毫秒
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介绍数据库即服务的概念,阐述应用数据库即服务的优势,给出沃云平台数据库即服务的设计方案及其实现的能力,分析部署数据库即服务应该注意的问题。 相似文献
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文章对云计算及Openstack进行了简要的介绍,提出了基于Openstack的多节点部署构建云平台的方案,并详细对其工作原理及关键组件的安装部署进行了说明,最后对平台的各个组件的服务进行了测试,各组件均可正常运行。 相似文献
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在进行数据库管理和使用过程中,需要保证数据的安全和完整性。因此,要对数据库进行同步备份,本文通过实例讲解,针对采用数据库复制实现数据库同步备份进行了探讨。主要对数据库复制的原理、数据库复制的环境、数据库的恢复模式,以及安装与配置进行了探讨。 相似文献
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本文阐述了利用Matlab进行Oracle数据库开发设计的方法,使用Matlab工具以Oracle作为数据库管理系统,外发出功能强大、使用方便的应用程序,可以灵活的进行数据处理运算和数据管理。用实例说明了Matlab与Oracle数据库的连接和数据库表建立的方法,对有类似需求的用户有一定的指导意义。 相似文献
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与传统的编程方式相比,LabVIEW更加简单易学并且应用十分广泛。LabVIEW运用了图形化的编程语言,并且提供了丰富的库函数与图形界面组件,有效缩短了开发周期。但LabVIEW自身并不具备访问数据库的功能,这就需要用到其他的辅助技术来访问数据库。本文分析了常用的几种LabVIEW数据库访问方法,并对LabSQL这种辅助方法进行了详细阐述,以此体现利用LabSQL进行数据库访问的优势。 相似文献
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We focus on security and privacy problems within a cloud database framework, exploiting the DataBase as a Service (DBaaS). In this framework, an information proprietor drives out its information to a cloud database professional company. The Data-Owner (DO) encrypts the delicate information before transmission at the cloud database professional company end to offer information security. Current encryption ideas, nonetheless, are just halfway homomorphic as all of them intend to enable an explicit kind of calculation, which is accomplished on scrambled information. These current plans can’t be coordinated to solve genuine functional queries that include activities of various types. We propose and evaluate a Verifiable Reliable Secure-DataBase (VRS-DB) framework on shared tables along with many primary operations on scrambled information, which enables information interoperability, and permits an extensive possibility of Structured Query Language (SQL) queries to be prepared by the service provider on the encoded data. We show that our security and privacy idea is protected from two forms of threats and are fundamentally proficient. 相似文献
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随着时代的进步,数据量变的越来越大,同时数据库也就扮演着越来越重要的角色。而数据库的备份与恢复就是支撑一个数据库稳定运作的关键。文章就Oracle数据库的备份和恢复进行简要的阐述并介绍了备份和恢复的过程以及原理。 相似文献
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基于模糊数据库的数据查询研究 总被引:6,自引:0,他引:6
在现实生活中查询对象既有确定性数据也有大量模糊性数据,现有传统查询技术已无法满足此要求。文章将模糊理论与数据库系统相结合,得到一种数据查询新技术。在介绍了模糊查询和模糊数据的表示之后,提出了建立基于可能性的模糊数据库。并应用于实例中,构筑了在模糊数据库中实现查询的理论和实践框架。 相似文献
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LiuCaixia YuDingjiu ChengDongnian TangHongbo WuJiangxing 《电子科学学刊(英文版)》2004,21(4):296-305
In this paper, a novel Home Location Register(HLR) mobility database recovery scheme is proposed. With database backing-up and signal sending as its key processes, the presented scheme is designed for the purpose of both decreasing system costs and reducing number of lost calls. In our scheme, an algorithm is developed for an HLR to identify such VLRs that there are new MSs roaming into them since the latest HLR database backing up. The identification of those VLRs is used by the HLR to send Unreliable Roaming Data Directive messages to each of them to get the correct location information of those new MSs.Additionally, two kinds of relationships, one between the number of lost calls and the database backing-up period and the other between the backing-up cost and the period, are well analyzed. Both analytical and numerical results indicate that there will be an optimal HLR database backing-up period if certain system parameters are given and the total cost can be consequently minimized. 相似文献