Air Indexing for On-Demand XML Data Broadcast

• Main Authors: SUN, Weiwei, QIN, Rongrui, WU, Jinjin, ZHENG, Baihua
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2014
• Subjects: XML data broadcast; air indexing; two-tier index; index distribution; on-demand broadcast; Databases and Information Systems; Numerical Analysis and Scientific Computing
• Online Access: https://ink.library.smu.edu.sg/sis_research/1834; https://ink.library.smu.edu.sg/context/sis_research/article/2833/viewcontent/06487496.pdf
• Institution: Singapore Management University

XML data broadcast is an efficient way to disseminate semi-structured information in wireless mobile environments. In this paper, we propose a novel two-tier index structure to facilitate the access of XML document in an on-demand broadcast system. It provides the clients with an overall image of all the XML documents available at the server side and hence enables the clients to locate complete result sets accordingly. A pruning strategy is developed to cut down the index size and a two-tier structure is proposed to further remove any redundant information. In addition, two index distribution strategies, namely naive distribution and partial distribution, have been designed to interleave the index information with the XML documents in the wireless channels. Theoretical analysis and simulation experiments are also put forward to show the benefits of our indexing methods.