Currently, XML by itself is a flat structure used to describe structured document for data transfer. In this paper, through a Web based Video Application which used enhanced XML descriptions for data transfer, we present an approach to convert the enhanced XML into Object-Oriented XML by integrating them into an object-oriented database (OODB). To enhance the functionality of the XML objects, methods are incorporated, making the efficient XML processing and retrieval to be possible. For higher query performance, we apply upon the XML objects the Structural Join Index Hierarchy (SJIH) which is an object indexing technique particularly suited to multimedia databases. The validity and effectiveness of this approach is demonstrated through an analytical evaluation.