(3) The XML scheme is now widely used to exchange information in the Internet environment. Additionally, now that more studies and further developments of XML database management systems are made than ever before, it is advantageous to use it because its definitions and manipulations are well standardized in [3]. However, from a data model perspective, it presents the problem that it does not go well with any object-oriented data model that is now associated with multimedia. Even given that fact, now that the object-oriented concept is incorporated into the extended standardization of the SQL language, it has been improved in its affinity level with the associated XML scheme being converted to a relational database scheme. In addition to that, because the XML schema is a semi-structured dynamic one, it is still advantageous because of the fact that it is useful in a flexible fashion with various databases available on the Internet.