食品安全数据库的存储与访问控制

发布时间：2018-01-03 19:15

本文关键词：食品安全数据库的存储与访问控制　出处：《江苏科技大学》2016年硕士论文　论文类型：学位论文

更多相关文章： 食品安全 溯源 RBAC XML Schema 存储

【摘要】：随着国内食品日益突出,民众迫切需要从食品的生产到销售化环节中获取各种信息以便用来检验食品的安全性。信息技术的飞速发展为实现对食品的数字化追溯提供了可能。在这样的大背景之下,食品安全溯源平台应运而生。在构建食品安全溯源平台的过程中,设计者主要将用户分为终端用户、企业用户、监管用户和管理员。其中作为平台数据提供者的企业用户数量众多,并且其权限需求经常因为职位,业务范围等因素的变化而发生改变。现有的角色访问控制只能通过手动修改用户对应的角色来达到修改用户权限的目的,考虑到企业用户的数量,这种方法难以符合要求。本文将探讨如何解决此类问题。同时企业用户与平台进行数据交换时采用的标准是XML,而平台数据的核心存储工具是关系型数据库。XML与关系型数据库在数据的结构上和组织上存在巨大差异。如何在保护敏感信息的情况下将XML高效的存储到关系型数据库也是本文研究的重要问题。针对溯源平台企业用户权限需求频繁变化的问题,本文创新性提出了基于用户特征与时间约束的RBAC模型。该模型在传统RBAC模型的基础上修改了用户和角色映射机制,取而代之的是将用户的特征属性作为其角色匹配的重要依据。该模型通过定义一系列的规则,由规则验证用户的特征属性集合后动态的匹配角色,同时为了解决角色动态匹配过程中的授权时间问题。该模型引入了时间约束并讨论了在时间约束下用户角色授权的一致性问题。该模型的最重要的特点就是用户的角色可以动态的匹配用户的特征属性。针对XML在关系型数据库中存储的问题,本文提出了一种带敏感元素检验的XML Schema关系映射法。利用XML Schema中存储的XML结构和内容规则,通过自定义的映射规则,将XML Schema中的简单类型元素和复杂类型元素映射成对应的关系模式。在转化的过程中,同时对普通信息和敏感信息加以区分处理,以防敏感信息的泄露。
[Abstract]:With the domestic food have become increasingly prominent, people urgently need to get all kinds of information from food production to sales in order to link food safety inspection. The rapid development of information technology provides the possibility for the realization of digital traceability of food. In this background, the food safety traceability platform came into being in the process of constructing food safety traceability. In the platform, the designers mainly divided into the user terminal users, business users, users and administrators. The supervision platform as the number of data providers and users of many enterprises, its power demand often because of jobs, changes the scope of business and change. The existing role-based access control only by manually modify the user corresponding to the role to modify the user permissions, taking into account the number of enterprise users, this method is difficult to meet the requirements. This paper will discuss How to solve this problem. At the same time the enterprise users and the platform using the data exchange standard is XML, while the core data storage tool platform is a relational database.XML and relational database, there is a huge difference in the data structure and organization. How to protect the sensitive information under the condition of XML efficient storage relationship type of database is studied in this paper. Aiming at the important problem traceability platform of enterprise user rights needs frequent change, this paper proposed a RBAC model based on time constraints and user characteristics. This model modifies the user and role mapping mechanism based on traditional RBAC model, it is the attribute of the user as an important on the basis of the character matching. The model by defining a series of rules, by matching the character attribute rule to validate user set after dynamic, at the same time In order to solve the dynamic role in matching process. The time authorization model introduces the time constraints and discuss the consistency of the authorized user role under time constraints. The attributes of the most important feature of this model is the role of the user. The user can match the dynamic problem for XML stored in relational database. In this paper, a XML Schema mapping method to test sensitive elements. By using the XML structure and content of XML rules are stored in Schema, the mapping rules of custom, the simple type element XML in Schema and a complex type element mapping relationship mode corresponding. In the process of transformation, at the same time for general information and sensitive information to distinguish between treatment, leakage prevention of sensitive information.

【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP311.13;TS201.6

【相似文献】