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Scalable Design of the Metadata-based Database

Author: WeiKai
Tutor: PengYuXing
School: National University of Defense Science and Technology
Course: Computer technology
Keywords: Metadata Dynamic information display and query Data Association Data sharing
CLC: TP311.13
Type: Master's thesis
Year: 2010
Downloads: 52
Quote: 1
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Abstract


With China's accession to the WTO, China's insurance industry to accelerate the pace of information technology, the shift in the focus of attention from the insurance industry IT technology products to how agile market adaptability to serve the rapidly changing business. For database management, it is necessary to consider how to deploy database changes depending on the application in a timely manner, and to quickly update the business entity, while also considering how to implement the decentralized IT environment, has the same semantics as the sharing of information resources stored in different databases. Most of the traditional information query and display specific display for a fixed database structure, with the improvement of the business requirements, data stored items will change, resulting in the change of the structure of the database. To this end, this paper presents a metadata-based dynamic query and display methods, this method does not change the query and display program, able to adapt to changes in the database structure. The basic idea is: the changes in the structure described by metadata database, enables applications to query and display dynamic program interface is not affected, consistent user access interface. In addition, traditional data acquisition method not through local access to remote data, with the demand of the network, but also require off-site data to support the business. Synonymous data source data sharing is able to get local access to the off-site data are not available locally. In response to this request, this paper presents a data sharing method based on data association. The basic idea is: a description of the data in different databases to establish the correlation between the data of different databases, and the relationship to find off-site data. Based on the design ideas, we have established a data association, and distribution of our existing database established in the network, through the sharing of data associated. In this paper, the above-mentioned outcomes successfully applied to claims scheduling system, to achieve data sharing data source more synonyms, consistent view of data resources for the applications-oriented system to provide; And when the data table structure changes, claims scheduling systems that can perform dynamic query and display program interface is not affected. In practical application shows that the system has good scalability, not only to facilitate the external data interconnection, and to ensure that new applications can be based on accessibility and both systems interact at the database level. Reached the expected design goals of the subject.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Programming > Database theory and systems
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