Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/619
Title: XML with Data Values: Typechecking Revisited
Authors: Alon, Noga
Milo, Tova
NEVEN, Frank 
Suciu, Dan
Vianu, Victor
Issue Date: 2001
Source: 20th Symposium on Principles of Database Systems.
Abstract: We investigate the typechecking problem for XML queries: statically verifying that every answer to a query conforms to a given output DTD, for inputs satisfying a given input DTD. This problem had been studied by a subset of the authors in a simplified framework that captured the structure of XML documents but ignored data values. We revisit here the typechecking problem in the more realistic case when data values are present in documents and tested by queries. In this extended framework, typechecking quickly becomes undecidable. However, it remains decidable for large classes of queries and DTDs of practical interest. The main contribution of the present paper is to trace a fairly tight boundary of decidability for typechecking with data values. The complexity of typechecking in the decidable cases is also considered.
Document URI: http://hdl.handle.net/1942/619
Category: C2
Type: Proceedings Paper
Appears in Collections:Research publications

Files in This Item:
File Description SizeFormat 
16 p29.pdf243.95 kBAdobe PDFView/Open
Show full item record

Page view(s)

60
checked on May 27, 2022

Download(s)

118
checked on May 27, 2022

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.