XMLEase: A Novel Access- and Space-Efficiency Model for Maintaining XML Data in Relational Databases.
Atilla Elçi, Behnam Rahnama · 2006
Abstract- Representing XML data in terms of the rows and columns of a relational table is quite inefficient. Similarly, object-oriented databases cater for storage of objects but lack fast access. In these cases, a better technique is required to speedup representation and retrieval of hierarchical data in relational databases. This paper presents XMLEase, a new access- and store-efficient technique to keep XML data in relational databases. XMLEase keeps data node together with its successors down to a pre-defined level of hierarchy. This method has been implemented and evaluated; in comparison to other similar methods it is found to perform better. It shows a fair linear performance independent to the depth of hierarchy with superior data retrieval efficiency. Although it suffers of a bit of extra space usage for storing successor links, however this is much less than that of the other methods used for dealing with XML data. Present paper focuses on the access efficiency of the model in connection with run query processing. This method's best feature is its efficiency in operations to store and retrieve XML data requiring only one-run SQL query.