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SAT
2005
Springer
111views Hardware» more  SAT 2005»
15 years 11 months ago
On Subsumption Removal and On-the-Fly CNF Simplification
Conjunctive Normal Form (CNF) Boolean formulas generated from resolution or solution enumeration often have much redundancy. It is desirable to have an efficient algorithm to simpl...
Lintao Zhang
SIGIR
2004
ACM
15 years 11 months ago
Query-related data extraction of hidden web documents
The larger amount of information on the Web is stored in document databases and is not indexed by general-purpose search engines (i.e., Google and Yahoo). Such information is dyna...
Yih-Ling Hedley, Muhammad Younas, Anne E. James, M...
TOOLS
2000
IEEE
15 years 10 months ago
Spatiotemporal Data Modeling and Management: A Survey
Many data objects in the real world have attributes about location and time. Such spatiotemporal objects can be found in applications such Geographic Information Systems (GIS), env...
Xiaoyu Wang, Xiaofang Zhou, Sanglu Lu
SIGMOD
1999
ACM
138views Database» more  SIGMOD 1999»
15 years 10 months ago
Storing Semistructured Data with STORED
Systems for managing and querying semistructured-data sources often store data in proprietary object repositories or in a tagged-text format. We describe a technique that can use ...
Alin Deutsch, Mary F. Fernández, Dan Suciu
189
Voted
GVD
2004
142views Database» more  GVD 2004»
15 years 7 months ago
Semantic Errors in SQL Queries: A Quite Complete List
We investigate classes of SQL queries which are syntactically correct, but certainly not intended, no matter for which task the query was written. For instance, queries that are c...
Christian Goldberg, Stefan Brass