GML Documents: An approach for Database Schema Design and Storing

GML (Geography Markup Language) uses the XML pattern and it possesses mechanisms and conventions to describe geographical information. This paper describes a solution for the storage of GML documents in object-relational database management systems (ORDBMS) supplying the support for the metadata and allowing the integration of the delegated systems and geographical data (in the GML format ) in an only system. A set of rules of transformation from GML schemas into object-relational schemas is proposed. The development of a prototype that supplies the support for the design of the database schema, allowing the generation of the script, is also described. Finally, it is made an analysis of the transformations of a repository and GML metadata for a object-relational database management system, in this case, DBMS Oracle 9.