@article{(Open Science Index):https://publications.waset.org/pdf/12712,
	  title     = {UB-Tree Indexing for Semantic Query Optimization of Range Queries},
	  author    = {S. Housseno and  A. Simonet and  M. Simonet},
	  country	= {},
	  institution	= {},
	  abstract     = {Semantic query optimization consists in restricting the
search space in order to reduce the set of objects of interest for a
query. This paper presents an indexing method based on UB-trees
and a static analysis of the constraints associated to the views of the
database and to any constraint expressed on attributes. The result of
the static analysis is a partitioning of the object space into disjoint
blocks. Through Space Filling Curve (SFC) techniques, each
fragment (block) of the partition is assigned a unique identifier,
enabling the efficient indexing of fragments by UB-trees. The search
space corresponding to a range query is restricted to a subset of the
blocks of the partition. This approach has been developed in the
context of a KB-DBMS but it can be applied to any relational
system.},
	    journal   = {International Journal of Computer and Information Engineering},
	  volume    = {3},
	  number    = {11},
	  year      = {2009},
	  pages     = {2508 - 2515},
	  ee        = {https://publications.waset.org/pdf/12712},
	  url   	= {https://publications.waset.org/vol/35},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 35, 2009},
	}