Technical Reports (CIS)
Document Type
Technical Report
Date of this Version
January 2001
Abstract
Building on a notion of keys for XML, we propose a novel indexing scheme for hierarchical data that is based not only on the structure but also the content of the data. The index can be used to check the validity of data with respect to a set of key specifications, as well as for efficiently evaluating queries and updates on key paths. We develop algorithms for the construction and incremental maintenance of the indexing structure, and study the complexity of these algorithms. Finally, we discuss how our indexing techniques can be used for more general queries involving key paths.
DownloadDate Posted: 04 August 2005
Comments
University of Pennsylvania Department of Computer and Information Science Technical Report No. MS-CIS-01-30.