Dynamic description logic model for data integration
文献类型：期刊论文
| 作者 | Guoshun Hao1; Shilong Ma1; Yuefei Sui2; Jianghua Lv1 |
| 刊名 | Frontiers of Computer Science in China
 |
| 出版日期 | 2008 |
| 卷号 | 2期号:3页码:306 |
| 关键词 | data integration dynamic description logics relational databases query processing knowledge representation |
| ISSN号 | 1673-7350 |
| 英文摘要 | Data integration is the issue of retrieving and combining data residing at distributed and heterogeneous sources, and of providing users with transparent access without being aware of the details of the sources. Data integration is a very important issue because it deals with data infrastructure issues of coordinated computing systems. Despite its importance, the following key challenges make data integration one of the longest standing problems around: 1) how to solve the system heterogeneity; 2) how to build a global model; 3) how to process queries automatically and correctly; and 4) how to solve semantic heterogeneity.This paper presents an extended dynamic description logic language to describe systems with dynamic actions. By this language, a universal and unified model for relational database systems and a model for data integration are presented. This paper presents a universal and unified description logic model for relational databases. The model is universal because any relational database system can be automatically transformed to the model; it is unified because it integrates three essential components of relational databases together: description logic knowledge bases modeling the relational data, atomic modalities modeling the atomic relational operations, and combined modalities modeling the combined relational operations-queries.Furthermore, a description logic model for data integration is proposed which contains four layers of ontologies. Based on the model, a solution for each key challenge is proposed: a universal model eliminates system heterogeneity; a novel global model including three ontologies is proposed with some important benefits; a query process mechanism is provided by which user queries can be decomposed to queries over the sources; and for solving the semantic heterogeneity, this paper provides a framework under which semantic relations can be expressed and inferred.In summary, this paper presents a dynamic knowledge base framework by an extended description logic language. Under the framework, databases and data integration systems are modeled, the query processing problem is converted into a semantic-preserving rewriting problem, and many other issues of data integration can be formally studied. |
| 语种 | 英语 |
| 源URL | [http://119.78.100.204/handle/2XEOYT63/35383]  |
| 专题 | 中国科学院计算技术研究所期刊论文_中文 |
| 作者单位 | 1.北京航空航天大学 2.中国科学院计算技术研究所 |
| 推荐引用方式 GB/T 7714 | Guoshun Hao,Shilong Ma,Yuefei Sui,et al. Dynamic description logic model for data integration[J]. Frontiers of Computer Science in China,2008,2(3):306. |
| APA | Guoshun Hao,Shilong Ma,Yuefei Sui,&Jianghua Lv.(2008).Dynamic description logic model for data integration.Frontiers of Computer Science in China,2(3),306. |
| MLA | Guoshun Hao,et al."Dynamic description logic model for data integration".Frontiers of Computer Science in China 2.3(2008):306. |
入库方式： OAI收割
来源：计算技术研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。