Modeling Nested Relationships in XML Documents Using Relational Databases

摘要: Structural joins, i.e., operations that determine all occurrences of parent/child or ancestor/descendant relationships between node sets, are at the heart XML management systems. To perform these systems exploit information about nested elements, attributes, and pieces text in documents. Since performing structural joins is often most time-consuming phase query evaluation, method chosen to model has a considerable impact on overall effectiveness any system. In this paper, we discuss four different methods for modeling using relational databases. We also propose novel present results our comprehensive performance experiments.