Title :
XGrind: a query-friendly XML compressor
Author :
Tolani, Pankaj M. ; Haritsa, Jayant R.
Author_Institution :
Dept. of Comput. Sci. & Autom., Indian Inst. of Sci., Bangalore, India
Abstract :
XML documents are extremely verbose since the "schema" is repeated for every "record" in the document. While a variety of compressors are available to address this problem, they are not designed to support direct querying of the compressed document, a useful feature from a database perspective. In this paper, we propose a new compression tool, called XGrind, that directly supports queries in the compressed domain. A special feature of XGrind is that the compressed document retains the structure of the original document, permitting reuse of the standard XML techniques for processing the compressed document. Performance evaluations over a variety of XML documents and user queries indicate that XGrind simultaneously delivers improved query processing times and reasonable compression ratios
Keywords :
data compression; hypermedia markup languages; multimedia databases; query processing; XGrind; XML documents; XML techniques reuse; compressed document processing; compression ratios; database; direct querying; document structure; performance evaluation; query processing times; query-friendly XML compressor; repeated schema; user queries; Automation; Bandwidth; Computer science; Containers; Internet; Personal digital assistants; Processor scheduling; Query processing; Spatial databases; XML;
Conference_Titel :
Data Engineering, 2002. Proceedings. 18th International Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
0-7695-1531-2
DOI :
10.1109/ICDE.2002.994712