A system for information management in simulation of manufacturing processes
Advances in Engineering Software - Special issue on engineering computational technology
Engineering information integration using object-oriented mediator technology
Software—Practice & Experience
Automated web service query service
International Journal of Web and Grid Services
Online Semantic Knowledge Management for Product Design Based on Product Engineering Ontologies
International Journal on Semantic Web & Information Systems
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A system has been developed permitting database queries over data extracted from a CAD system where the query result is returned back to the CAD for visualization and analysis. This has several challenges. First, CAD data representations use complex object-oriented schemasand the query language must be object-oriented too. Second, the query system resides outside the CAD system and must therefore use standardized data exchange formats for interoperability with the CAD. ISO STEP standard exchange formats are used for the exchange. Third, a CAD system cannot import an arbitrary object structure but places restrictions on the imported objects to be acceptable. Therefore, the query system mustcomplement the query results in order to produce an acceptable CAD model, called the model completion of the query. These problems have been solved using an extensible object-relational query processor. The system also supports queries combining CAD data with data from other data sources.