Research foundations in object-oriented and semantic database systems
From structured documents to novel query facilities
SIGMOD '94 Proceedings of the 1994 ACM SIGMOD international conference on Management of data
Functional Query Optimization over Object-Oriented Views for Data Integration
Journal of Intelligent Information Systems - Special issue on functional approach to intelligent information systems
Tigukat: a uniform behavioral objectbase management system
The VLDB Journal — The International Journal on Very Large Data Bases - Persistent object systems
Representative Objects: Concise Representations of Semistructured, Hierarchial Data
ICDE '97 Proceedings of the Thirteenth International Conference on Data Engineering
Object Exchange Across Heterogeneous Information Sources
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
Relational Databases for Querying XML Documents: Limitations and Opportunities
VLDB '99 Proceedings of the 25th International Conference on Very Large Data Bases
Integrating Heterogenous Overlapping Databases through Object-Oriented Transformations
VLDB '99 Proceedings of the 25th International Conference on Very Large Data Bases
Query processing over object views of relational data
The VLDB Journal — The International Journal on Very Large Data Bases
Query Optimization for Structured Documents Based on Knowledge on the Document Type Definition
ADL '98 Proceedings of the Advances in Digital Libraries Conference
Query Optimization for Structured Documents Based on Knowledge on the Document Type Definition
ADL '98 Proceedings of the Advances in Digital Libraries Conference
An XML-Based 3-Dimensional Graphic Database System
Proceedings of the First International Conference on The Human Society and the Internet - Internet Related Socio-Economic Issues
Integrating XML schema language with databases for b2b collaborations
APWeb'06 Proceedings of the 2006 international conference on Advanced Web and Network Technologies, and Applications
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The mediator/wrapper approach is used to integrate data from different databases and other data sources by introducing a middleware virtual database that provides high-level abstractions of the integrated data. A framework is presented for querying XML data through such an Object-Oriented (OO) mediator system using an OO query language. The mediator architecture provides the possibility to specify OO queries and views over combinations of data from XML documents, relational databases, and other data sources. In this way, interoperability of XML documents and other data sources is provided. The mediator provides OO views of the XML data by inferring the schema of imported XML data from the DTD of the XML documents, if available, using a set of translation rules. A strategy is used for minimizing the number of types (classes) generated in order to simplify the querying. If XML documents not having, DTDs are read, or if the DTD is incomplete, the system incrementally infers the OO schema from the XML structure while reading XML data. This requires that the mediator database is capable of dynamically extending and modifying the OO schema. The paper overviews the architecture of the system and describes incremental rules for translating XML documents to OO database structures.