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IFIP
2004
Springer
16 years 7 days ago
On Complexity of Model-Checking for the TQL Logic
In this paper we study the complexity of the model-checking problem for the tree logic introduced as the basis for the query language TQL [Cardelli and Ghelli, 2001]. We define tw...
Iovka Boneva, Jean-Marc Talbot
VLDB
1993
ACM
73views Database» more  VLDB 1993»
15 years 11 months ago
A Model of Methods Access Authorization in Object-oriented Databases
Object-oriented databases are a recent and important development and many studies of them have been performed. These consider aspects such as data modeling, query languages, perfo...
Nurit Gal-Oz, Ehud Gudes, Eduardo B. Fernán...
VLDB
1994
ACM
99views Database» more  VLDB 1994»
15 years 11 months ago
Join Index Hierarchies for Supporting Efficient Navigations in Object-Oriented Databases
A join index hierarchy method is proposed to handle the "goto's on disk" problem in objectoriented query processing. The method constructs a hierarchy of join indic...
Zhaohui Xie, Jiawei Han
CCGRID
2004
IEEE
15 years 10 months ago
Understanding Grid resource information management through a synthetic database benchmark/workload
Management of grid resource information is a challenging and important area considering the potential size of the grid and wide range of resources that should be represented. Thou...
Beth Plale, C. Jacobs, Scott Jensen, Ying Liu, C. ...
VLDB
2000
ACM
248views Database» more  VLDB 2000»
15 years 10 months ago
Multi-Dimensional Database Allocation for Parallel Data Warehouses
Data allocation is a key performance factor for parallel database systems (PDBS). This holds especially for data warehousing environments where huge amounts of data and complex an...
Thomas Stöhr, Holger Märtens, Erhard Rah...