Recently, several researches have been performed for updating XML documents[1][2][12] stored in databases. These researches define update operations and resolve some semantic problems. However, because the
update operations are usually validated after execution, conflicts can occur among them. Furthermore, in many studies for
updating, they just validate whole XML documents and canrst validate parts of them. If updates are very frequent, validation
will cause performance degradation. In this paper, we propose immediate and partial validation mechanism for these two problems.
This work was supported by Electronics and Telecommunications Research Institute(ETRI) and Software Research Center (SOREC)