Analysis of different approaches for storing GML documents
Proceedings of the 10th ACM international symposium on Advances in geographic information systems
Storing and Querying XML Data in Object-Relational DBMSs
EDBT '02 Proceedings of the Worshops XMLDM, MDDE, and YRWS on XML-Based Data Management and Multimedia Engineering-Revised Papers
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Advanced SQL 1999: Understanding Object-Relational, and Other Advanced Features
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GIS '03 Proceedings of the 11th ACM international symposium on Advances in geographic information systems
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WISEW'03 Proceedings of the Fourth international conference on Web information systems engineering workshops
Constraints-preserving GML storage in object-relational databases
Proceedings of the 15th annual ACM international symposium on Advances in geographic information systems
Toward approximate GML retrieval based on structural and semantic characteristics
ICWE'10 Proceedings of the 10th international conference on Web engineering
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DASFAA'11 Proceedings of the 16th international conference on Database systems for advanced applications
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GML has become the de facto standard for electronic spatial data exchange among the applications of Web and distributed geographic information systems (GISs). As more and more geographical data is presented in GML, it is necessary to develop techniques for managing GML documents in databases. A possible solution is to store GML data into object-relational databases from which the users can retrieve the interested data. In this paper, we propose an approach to map GML schema to object-relational database schema by using GML schema graph, and algorithms for storing / querying valid GML documents into / from the relations generated by the corresponding object-relational schema. Spatial and non-spatial features embedded in GML document are stored in object-oriented relations, and the structures and constrains defined in GML schema are also well preserved. A prototype for GML documents storing and querying based on the proposed method is implemented on the basis of the Oracle/Spatial system. Preliminary experiment results shows that our method is feasible and efficient.