Citation |
Designing Semistructured Databases: A Conceptual Approach, pp. 12-21, 12th International Conference on Database and Expert Systems Applications (DEXA 2001), Heinrich C. Mayr, Jirí Lazanský, Gerald Quirchmayr, Pavel Vogel (Ed.), Lecture Notes in Computer Science, Springer-Verlag, Munich, Germany, Lecture Notes in Computer Science, Vol. 2113, September 2001, 3-540-42527-6.
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Descriptions |
Abstract:
Semistructured data has become prevalent with the growth of the Internet. The data is usually stored in a database system or in a specialized repository. Many information providers have presented their databases on the web as semistructured data, while others are developing repositories for new applications. Designing a "good" semistructured database is important to prevent data redundancy and updating anomalies. In this paper, we propose a conceptual approach to design semistructured databases. A conceptual layer based on the Entity-Relationship model is used to remove redundancies at the semantic level. An algorithm to map an ER diagram involving composite attributes weak entity types, recursive, n-ary and ISA relationship sets, and aggregations to a semistructured schema graph (S3-Graph) is also given. |
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