Journal ArticleDOI
OLAP query reformulation in peer-to-peer data warehousing
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TLDR
A peer-to-peer data warehousing architecture based on a network of heterogeneous peers, each exposing query answering functionalities aimed at sharing business information is envisioned, and a query reformulation framework that relies on the translation of mappings, queries, and multidimensional schemata onto the relational level is introduced.About:
This article is published in Information Systems.The article was published on 2012-07-01. It has received 50 citations till now. The article focuses on the topics: Online analytical processing & Data warehouse.read more
Citations
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Journal ArticleDOI
Fusion Cubes: Towards Self-Service Business Intelligence
Alberto Abelló,Jérôme Darmont,Lorena Etcheverry,Matteo Golfarelli,Jose-Norberto Mazón,Felix Naumann,Torben Bach Pedersen,Stefano Rizzi,Juan Trujillo,Panos Vassiliadis,Gottfried Vossen +10 more
TL;DR: The underlying core idea is the notion of fusion cubes, i.e., multidimensional cubes that can be dynamically extended both in their schema and their instances, and in which situational data and metadata are associated with quality and provenance annotations.
Journal ArticleDOI
The impact model of business intelligence on decision support and organizational benefits
TL;DR: A quantitative survey-based study to represent the relationship between BI capabilities, decision support benefits, and organizational benefits in context of decision environment using the partial least squares technique.
Book ChapterDOI
From Star Schemas to Big Data: 20+ Years of Data Warehouse Research
Matteo Golfarelli,Stefano Rizzi +1 more
TL;DR: More than 20 years of research on data warehouse systems are surveyed, from their early relational implementations (still widely adopted in corporate environments), to the new architectures solicited by Business Intelligence 2.0 scenarios during the last decade, and up to the exciting challenges now posed by the integration with big data settings.
Journal ArticleDOI
A requirement-driven approach to the design and evolution of data warehouses
TL;DR: This paper presents a semi-automatic method, called ORE, for creating DW designs in an iterative fashion based on a given set of information requirements, which builds the unified MD schema that satisfies the entire set of requirements and meet some predefined quality objectives.
Automated Integration of Heterogeneous Data Warehouse Schemas.
TL;DR: In this paper, the authors present a procedure that enables the matching process for schema structures specific to the multidimensional model of data warehouses: facts, measures, dimensions, aggregation levels and dimensional attributes.
References
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Proceedings ArticleDOI
Data integration: a theoretical perspective
TL;DR: The tutorial is focused on some of the theoretical issues that are relevant for data integration: modeling a data integration application, processing queries in data integration, dealing with inconsistent data sources, and reasoning on queries.
Journal ArticleDOI
Data cube: a relational aggregation operator generalizing GROUP-BY, CROSS-TAB, and SUB-TOTALS
TL;DR: The data cube operator as discussed by the authors generalizes the histogram, cross-tabulation, roll-up, drill-down, and sub-total constructs found in most report writers.
Posted Content
Data Cube: A Relational Aggregation Operator Generalizing Group-By, Cross-Tab, and Sub-Totals
Jim Gray,Surajit Chaudhuri,Adam Bosworth,Andrew Layman,Don Reichart,Murali Venkatrao,Frank Pellow,Hamid Pirahesh +7 more
TL;DR: The cube operator as discussed by the authors generalizes the histogram, cross-tabulation, roll-up, drill-down, and sub-total constructs found in most report writers, and treats each of the N aggregation attributes as a dimension of N-space.
Journal ArticleDOI
Answering queries using views: A survey
TL;DR: The state of the art on the problem of answering queries using views is surveyed, the algorithms proposed to solve it are described, and the disparate works into a coherent framework are synthesized.
Book ChapterDOI
Data Exchange: Semantics and Query Answering
TL;DR: The notion of "certain answers" in indefinite databases for the semantics for query answering in data exchange is adopted and the computational complexity of computing the certain answers in this context is investigated.