Analytical results show that when compared with UM-trees the new data structure improves average searching time and substantially increases space efficiency. Asymptotic space efficiency, measured as the ratio of
Many database systems that use a B + tree as the underlying data structure do not do rebalancing on deletion. This means that a bad sequence of deletions can create a very unbalanced tree. Yet such databases perform well in practice. Avoidance of rebalancing on deletion has been justified...
1. A computer-implemented method comprising: identifying an empty node of a multiway radix tree data structure in a memory, the node at a node level of the multiway radix tree; assigning a logical level number to a symbol in a key, the key being a string of symbols, the symbol being...
Split trees are a suitable data structure for storing records with different access frequencies. The keys in the root node are required to have the highest access frequencies among all keys in the tree. If the requirement of the highest frequency keys in the root node is ignored, the ...
By adding periodic rebuilding of the tree, we obtain a data structure that is theoretically superior to standard B~+ trees in many ways. We conclude that rebalancing on deletion can be considered harmful.Siddhartha SenRobert E. TarjanAlgorithms and Computation: 20th International Symposium, ISAAC ...
ThenB***-tree uses a special node data structure that eliminates some of thenI/O overhead incurred during building the index. Moreover, an adaptationnof the B***-tree in distributed memory multiprocessors is discussed.nThis structure guarantees 100% storage utilization, and incurs antolerable ...
Algorithms for querying by spatial structure. In Proceedings of the 24th International Conference on Very Large Data Bases, New York, NY, USA, 27–27 August 1998; pp. 546–557. 17. Park, H.; Cha, G.; Chung, C. Multi-way spatial joins using R-trees: Methodology and performance ...