Abstract
The recent proliferation of multimedia information has increased the need for quick support of newly developed media and technology by database management systems (DBMSs). Although an extensible DBMS based on object-oriented or object-relational database models has the capability to support user-defined functions, it is still a difficult task to incorporate a new algorithm developed in other fields into a specific DBMS, because the algorithm must be re-implemented with the server programming interface of the DBMS. With the purpose of making this task easier, we have built a system integrating an extensible DBMS, PostgreSQL, with a modular visualization environment (MVE), Khoros, which provides interactive visual programming environments and data processing libraries. In order to reduce the re-implementation overhead, our system translates a program developed for Khoros into the corresponding server-side function of PostgreSQL. Since MVEs are the de facto standard of visualization environments, new media-processing algorithms are expected to be developed in such environments. Our system makes these algorithms readily available for programmers and users of the DBMS. Moreover, the system provides the capability to formulate and execute SQL statements from the visual programming environment of Khoros. This feature also enables quick building of visual user-interfaces.
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