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ER
2004
Springer
107views Database» more  ER 2004»
14 years 1 months ago
A Scaleless Data Model for Direct and Progressive Spatial Query Processing
A progressive spatial query retrieves spatial data based on previous queries (e.g., to fetch data in a more restricted area with higher resolution). A direct query, on the other si...
Sai Sun, Sham Prasher, Xiaofang Zhou
KSEM
2010
Springer
13 years 5 months ago
Large-Scale, Exhaustive Lattice-Based Structural Auditing of SNOMED CT
One criterion for the well-formedness of ontologies is that their hierarchical structure forms a lattice. Formal Concept Analysis (FCA) has been used as a technique for assessing ...
Guo-Qiang Zhang
ICDE
2011
IEEE
243views Database» more  ICDE 2011»
12 years 11 months ago
Interactive SQL query suggestion: Making databases user-friendly
— SQL is a classical and powerful tool for querying relational databases. However, it is rather hard for inexperienced users to pose SQL queries, as they are required to be proï¬...
Ju Fan, Guoliang Li, Lizhu Zhou
ICDT
2012
ACM
226views Database» more  ICDT 2012»
11 years 10 months ago
Factorised representations of query results: size bounds and readability
We introduce a representation system for relational data based on algebraic factorisation using distributivity of product over union and commutativity of product and union. We giv...
Dan Olteanu, Jakub Zavodny
DATESO
2009
146views Database» more  DATESO 2009»
13 years 5 months ago
Compression of the Stream Array Data Structure
In recent years, many approaches to XML twig pattern query (TPQ) processing have been developed. Some algorithms are supported by a stream abstract data type. s an abstract data ty...
Radim Baca, Martin Pawlas