Method Transformations for Vertical Partitioning in Parallel and Distributed Object Databases

. Vertical partitioning is a useful technique for performance improvement in parallel and distributed object oriented database systems (POBSs and DOBSs). Arising from partitioning, there is a need to modify methods in a user defined schema for correct execution in the partitioned domain. A partitioning scheme should also support application transparency in order to make schema definitions and vertical partitioning independent. We have followed an approach of method transformations for dealing with these problems. A complete taxonomy for the method types arising from vertical partitioning of a class is presented with transformations for each of these types. The role of the transformations in determining the cost of methods is also briefly presented. Keywords Vertical partitioning, Parallel object database, Distributed object database, Object oriented database 1 Introduction The popularity of object oriented database systems (ODBSs) has inspired researchers to find techniques for impro..