An interface between object-oriented databases and relational databases |
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Authors: | Chin-Wan Chung |
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Affiliation: | (1) Department of Information and Communication Engineering, Korea Advanced Institute of Science and Technology, 130-650 Seoul, Korea |
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Abstract: | Currently relational databases are widely used, while object-oriented databases are emerging as a new generation of database technology. This paper presents a methodology to provide effective sharing of information in object-oriented databases and relational databases. The object-oriented data model is selected as a common data model to build an integrated view of the diverse databases. An object-oriented query language is used as a standard query language. A method is developed to transform a relational data definition to an equivalent object-oriented data definition and to integrate local data definitions. Two distributed query processing methods are derived. One is for general queries and the other for a special class of restricted queries. Using the methods developed, it is possible to access distributed object-oriented databases and relational databases such that the locations and the structural differences of the databases are transparent to users. |
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Keywords: | database interface distributed systems translation integration |
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