Integrating and Managing Multimedia Presentations by a Web-based Object Server

is an interactive application that should be executed considering specific temporal and spatial constraints. These aspects have been addressed by multimedia standards and databases. In the first case, languages such as XML [W3C98a] and SMIL [W3C98b] specify respectively multimedia documents and presentations. On the other hand, the database technology is being extended to manipulate multimedia data, documents and presentations [MS96] to address questions as: How to model multimedia data, documents and presentations ? How to store and retrieve them efficiently? How to query their content, their structure or both? The goal of our research is to define and implement a framework for building, storing and executing spatial and/or temporal presentations. This framework is based on a pivot representation model to integrate and query multimedia data (e.g., GIF images, XML documents, database media objects) retrieved from heterogeneous and distributed sources. 1 Approach Mu