INDEXING OF MEDICAL XML DOCUMENTS STORED IN WORM STORAGE*

Abstract

Write-Once-Read-Many (WORM) storage devices may be used to store critical medical data to prevent them from easy modification. In this paper, we propose a novel indexing structure for encrypted medical XML documents stored in WORM storage. The proposed indexing that uses Generalized Hash Tree (GHT) expedites projection and selection operations on encrypted medical XML records stored in WORM storage. We implemented and tested the proposed system.