Object-oriented retrieval mechanism for semistructured image collections
MULTIMEDIA '98 Proceedings of the sixth ACM international conference on Multimedia
The Indispensability of Dispensable Indexes
IEEE Transactions on Knowledge and Data Engineering
Join Index Hierarchy: An Indexing Structure for Efficient Navigation in Object-Oriented Databases
IEEE Transactions on Knowledge and Data Engineering
2D-CHI: A Tunable Two-Dimensional Class Hierarchy Index for Object-Oriented Databases
COMPSAC '00 24th International Computer Software and Applications Conference
A configurable type hierarchy index for OODB
The VLDB Journal — The International Journal on Very Large Data Bases
CIKM '03 Proceedings of the twelfth international conference on Information and knowledge management
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Queries in object-oriented databases (OODBs) may be asked with respect to different class scopes: a query may either request for object-instances which belong exclusively to a given class c, or those which belong to any class in the hierarchy rooted at c. To facilitate retrieval of objects both from a single class as well as from multiple classes in a class hierarchy, we propose a multi-dimensional class-hierarchy index called the /spl chi/-tree. The /spl chi/-tree dynamically partitions the data space using both the class and indexed attribute dimensions by taking into account the semantics of the class dimension as well as access patterns of queries. Experimental results show that it is an efficient index.