On Index Structures for Star Query Processing in Data Warehouses

2014 ◽  
pp. 182-217
Author(s):  
Artur Wojciechowski ◽  
Robert Wrembel
Keyword(s):  
Query Processing ◽  
Index Structures ◽  
Data Warehouses

An Envisioned Approach for Modeling and Supporting User-Centric Query Activities on Data Warehouses

2013 ◽  
Vol 9 (2) ◽  
pp. 89-109 ◽  
Author(s):  
Marie-Aude Aufaure ◽  
Alfredo Cuzzocrea ◽  
Cécile Favre ◽  
Patrick Marcel ◽  
Rokia Missaoui
Keyword(s):  
Data Mining ◽  
Knowledge Management ◽  
Information Retrieval ◽  
Query Processing ◽  
Data Warehouse ◽  
Multidimensional Data ◽  
Data Warehouses ◽  
Cooperative Query Answering ◽  
User Centric ◽  
Use Of Knowledge

In this vision paper, the authors discuss models and techniques for integrating, processing and querying data, information and knowledge within data warehouses in a user-centric manner. The user-centric emphasis allows us to achieve a number of clear advantages with respect to classical data warehouse architectures, whose most relevant ones are the following: (i) a unified and meaningful representation of multidimensional data and knowledge patterns throughout the data warehouse layers (i.e., loading, storage, metadata, etc); (ii) advanced query mechanisms and guidance that are capable of extracting targeted information and knowledge by means of innovative information retrieval and data mining techniques. Following this main framework, the authors first outline the importance of knowledge representation and management in data warehouses, where knowledge is expressed by existing ontology or patterns discovered from data. Then, the authors propose a user-centric architecture for OLAP query processing, which is the typical applicative interface to data warehouse systems. Finally, the authors propose insights towards cooperative query answering that make use of knowledge management principles and exploit the peculiarities of data warehouses (e.g., multidimensionality, multi-resolution, and so forth).

Optimizing Aggregate Query Processing in Cloud Data Warehouses

2014 ◽  
pp. 1-12 ◽  
Author(s):  
Swathi Kurunji ◽  
Tingjian Ge ◽  
Xinwen Fu ◽  
Benyuan Liu ◽  
Amrith Kumar ◽  
...  
Keyword(s):  
Query Processing ◽  
Data Warehouses ◽  
Cloud Data ◽  
Aggregate Query

Extending metric index structures for efficient range query processing

2006 ◽  
Vol 10 (2) ◽  
pp. 211-227 ◽  
Author(s):  
Karin Kailing ◽  
Hans-Peter Kriegel ◽  
Martin Pfeifle ◽  
Stefan Schönauer
Keyword(s):  
Query Processing ◽  
Range Query ◽  
Index Structures ◽  
Range Query Processing
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