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Research on the Centralized Access Control of Central Database

Author: WangKeBo
Tutor: XueDaShen
School: Dalian Maritime University
Course: Management Science and Engineering
Keywords: Central database Data Control Data Access Middleware Pooling resources technology
CLC: TP311.52
Type: Master's thesis
Year: 2010
Downloads: 61
Quote: 1
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Abstract


With the wide application of computer network technology, enterprise information construction has been a lot of development. At the same time, enterprises have accumulated a lot of data stored in different forms, depending on the different database management systems. Accumulated a lot of applications that use these databases, these application software developed by different units at different times, the C / S structure and B / S structure, the development language used is not the same. This situation, the dispersibility of the data information is stored, the data information is very difficult to maintain; internal unable to achieve data sharing; the more important is the security of the data can not be guaranteed. Data access middleware technology provides a better solution for these problems. In this paper, the context of practical applications, combined with the actual needs of the logging company, designed and implemented based on the idea of ??data access middleware, centralized management and control systems in a central database. This paper first analyzes the logging company information management issues, and to study the use of data access middleware technology to solve the need for company information management aspects; proposed the establishment of a central database to store data for all applications, software applications through data access middleware to access a central database; data access middleware theoretical knowledge and related technologies. Comprehensive application of Java and XML technology, based on the idea of ??data access middleware, designed centralized access control system for a logging company dedicated central database. The paper gives a detailed design, the final realization of the process is given. The system is divided into a unified data access control and unified data services. Unified data access service to accept client application software data service request, the requested information is in XML format, read request information in accordance with the pre-designed XML specification, according to the request for information to connect and operate the database, and then convert the result returned by the database into an XML document, the document is sent to the client application software. Unified data control service access control. Before unified data access services to connect to the database, to connect the unified data control services, query whether the current client software has permission to perform the requested data operation. The XML as a common data model, using the Java programming language as well as TCP / IP Socket, DOM4J, the JDBC database connection pool and thread pool and other technology. The system shielded the operation of the database, and provides a unified data access interface for the client software, new applications through a unified data access interface access to a central database, the existing client software after some simple be able to access the central database modifications after, so that the original data dispersed in various applications database information can be concentrated in a large relational database, so that the data can be centrally managed to achieve the company's data sharing; unified access control services are designed to effectively ensure the security of all data.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Software Engineering > Software Development
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