A superimposed codeword indexing scheme for very large Prolog databases

Author(s):  
Kotagiri Ramamohanarao ◽  
John Shepherd
Keyword(s):  
2019 ◽  
Vol 164 ◽  
pp. 378-403 ◽  
Author(s):  
Joe Tekli ◽  
Richard Chbeir ◽  
Agma J.M. Traina ◽  
Caetano Traina

Author(s):  
Soo Kang ◽  
Dongkyo Hwang ◽  
Junho Park ◽  
Dongook Seong ◽  
Jaesoo Yoo

Author(s):  
Frank Dehne ◽  
Todd Eavis ◽  
Andrew Rau-Chaplin

This chapter addresses the query performance issue for Relational OLAP (ROLAP) data cubes. The authors present RCUBE, a distributed multi-dimensional ROLAP indexing scheme which is practical to implement, requires only a small communication volume, and is fully adapted to distributed disks. Their solution is efficient for spatial searches in high dimensions and scalable in terms of data sizes, dimensions, and number of processors. Their method is also incrementally maintainable. Using “surrogate” group-bys, it allows for the efficient processing of arbitrary OLAP queries on partial cubes, where not all of the group-bys have been materialized. Experiments with RCUBE show that the ROLAP advantage of better scalability, in comparison to MOLAP, can be maintained while providing, at the same time, a fast and flexible index for OLAP queries.


Author(s):  
Alexis Kaporis ◽  
Christos Makris ◽  
George Mavritsakis ◽  
Spyros Sioutas ◽  
Athanasios Tsakalidis ◽  
...  
Keyword(s):  

2020 ◽  
Vol 105 ◽  
pp. 1-12 ◽  
Author(s):  
Zhulin Ma ◽  
Edwin H.-M. Sha ◽  
Qingfeng Zhuge ◽  
Weiwen Jiang ◽  
Runyu Zhang ◽  
...  

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