物流管理信息系统数据库设计的研究

本文在物流管理信息系统设计与开发的基础上，论速了在物流管理信息系统建设中数据库设计的重要性及其设计过程，并对于数据库设计中重要数据的安全性和完整性机制作了说明。     

C/S和B/S相结合的安全型管理信息系统开发

为了开发基于C/S(客户/服务器),B/S(浏览器/服务器)模式的高校学生公寓管理系统的网络体系,在对C/S与B/S模式结构进行分析比较的基础上,针对该系统的建设目标和功能要求,对该系统进行了网络体系布置、数据库设计、系统框架设计和系统安全性设计,该系统的实施可以实现C/S和B/S模式结合起来开发管理系统的一种体系结构。     

Some issues in blockchain for accounting and the supply chain,with an application of distributed databases to virtual organizations

This paper reviews some recent blockchain‐based applications for information capture, distribution and preservation. As part of that review, this paper examines two key concerns with current blockchain designs for accounting and supply chain transactions: data independence and multiple semantic models for the same information distribution problem. Blockchain applications typically integrate database, application and presentation tiers all in the same ledger. This results in a general inability to query information in the ledger and other concerns. Further, since most applications appear to be private blockchain applications, there is a concern of agents needing to accommodate multiple blockchains depending on who their trading partners are and what they request. Finally, this paper uses a distributed database to design a ‘blockchain‐like’ system for virtual organizations.     

我国铁路计算机编图系统的组成及运作模式构想

根据我国铁路运输管理模式的特殊性及编图工作的特点,提出我国未来计算机编图系统的组成、运作模式及需解决的技术难点。     

Inequality of Opportunity in Europe

Using the EU‐SILC database, we estimate and compare the Inequality of Opportunity (IO) of 23 European countries in 2005. IO is estimated as the between‐type (ex‐ante) inequality component following the parametric procedure of Ferreira and Gignoux (2011 ), which allows for the inclusion of the large set of circumstances in the database. We also measure the degree of correlation between IO estimates and a set of past and contemporaneous economic factors related to the degree of development, labor market performance, investment in human capital, and social protection spending.     

高职院校数据库资源利用统计分析研究——以九江职业技术学院图书馆CNKI数据库使用情况为例

在网络技术高速发展的今天,电子馆藏在图书馆藏中所占的比重也越来越大。作者对九江职业技术学院利用率较高的数据库使用情况进行了统计,其中CNKI的使用率最高,作者以CNKI的统计数据具体分析,这样可以直观反映资源利用的程度及特点,有利于为图书馆的资源采购、续订等决策提供很多有价值的客观信息,提高数据库资源的管理水平;通过分析,有利于促进检索服务、咨询服务和培训服务的开展,为用户提供良好的资源利用环境。     

信息安全平台的实现与应用

在分析铁路业务模式的基础上,论述了铁路专用信息安全平台的设计思路,以及数据库系列、MQ模式、P2P模式的实现原理。列举了信息安全平台的典型应用,如在铁路调度信息系统中的应用和在专线模式中的应用。提出的网络安全防护理念的信息安全平台,能适用于多种业务模式下的信息交换。     

铁路车站能力计算综合集成系统的研究

现行铁路车站能力计算反映的是车站一昼夜内各项作业均衡进行时的能力情况,为适应铁路运输全面走向市场的要求,综合车站能力查定的行业规范、传统经验、理论成果等,研究开发了集计算、优化与信息管理于一体的车站能力综合集成系统,使车站能力计算查定趋于简单实用。     

分布式数据库技术在铁路局供电管理中的应用

郑州铁路局在电气化铁道的供电系统中应用“铁路牵引供电管理信息系统”(EMIS)实现了联网管理、信息共享。对于这种异地数据的应用处理面临着数据同步、数据共享、并行处理、数据传输等4个主要问题,为此EMIS采用了适合于现有网络条件的分布式数据库技术。在分析分布式数据库面临的安全问题的基础上,介绍了EMIS采用的安全保密措施,并针对其不足提出了有关建议措施。     

Extending multi-tenant architectures: a database model for a multi-target support in SaaS applications

Multi-tenant architectures (MTAs) are considered a cornerstone in the success of Software as a Service as a new application distribution formula. Multi-tenancy allows multiple customers (i.e. tenants) to be consolidated into the same operational system. This way, tenants run and share the same application instance as well as costs, which are significantly reduced. Functional needs vary from one tenant to another; either companies from different sectors run different types of applications or, although deploying the same functionality, they do differ in the extent of their complexity. In any case, MTA leaves one major concern regarding the companies’ data, their privacy and security, which requires special attention to the data layer. In this article, we propose an extended data model that enhances traditional MTAs in respect of this concern. This extension – called multi-target – allows MT applications to host, manage and serve multiple functionalities within the same multi-tenant (MT) environment. The practical deployment of this approach will allow SaaS vendors to target multiple markets or address different levels of functional complexity and yet commercialise just one single MT application. The applicability of the approach is demonstrated via a case study of a real multi-tenancy multi-target (MT²) implementation, called Globalgest.