• Publications
  • Influence
YAM2: a multidimensional conceptual model extending UML
TLDR
This paper presents a multidimensional conceptual Object-Oriented model for Data Warehousing and OLAP tools, its structures, integrity constraints and query operations. Expand
  • 168
  • 18
Research in data warehouse modeling and design: dead or alive?
TLDR
This paper follows from a wide discussion that took place in Dagstuhl during the Perspectives Workshop "Data Warehousing at the Crossroads". Expand
  • 230
  • 15
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Using Semantic Web Technologies for Exploratory OLAP: A Survey
TLDR
This paper describes the convergence of some of the most influential technologies in the last few years, namely data warehousing (DW), on-line analytical processing (OLAP), and the Semantic Web, resulting in a new type of OLAP, exploratory OLAP. Expand
  • 134
  • 11
Fusion Cubes: Towards Self-Service Business Intelligence
TLDR
Self-service business intelligence is about enabling non-expert users to make well-informed decisions by enriching the decision process with situational data, i.e., data that have a narrow focus on a specific business problem and, typically, a short lifespan for a small group of users. Expand
  • 123
  • 9
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A framework for multidimensional design of data warehouses from ontologies
TLDR
We introduce a user-centered approach to support the end-user requirements elicitation and the data warehouse multidimensional design tasks. Expand
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A Survey of Multidimensional Modeling Methodologies
TLDR
We present the most relevant methodologies introduced in the literature and a detailed comparison showing main features of each approach. Expand
  • 128
  • 8
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GEM: Requirement-Driven Generation of ETL and Multidimensional Conceptual Designs
TLDR
We present a method that combines information about the data sources along with the business requirements, for validating and completing -if necessary- these requirements, producing a multidimensional design, and identifying the ETL operations needed. Expand
  • 75
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Automating multidimensional design from ontologies
TLDR
This paper presents a new approach to automate the multidimensional design of Data Warehouses based on a domain ontology. Expand
  • 123
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On the Need of a Reference Algebra for OLAP
TLDR
This paper presents a comparison of the existing multidimensional algebras trying to find a common backbone, as well as it discusses the necessity of a referencemultidimensional algebra and the current state of the art. Expand
  • 51
  • 7
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Discovering functional dependencies for multidimensional design
TLDR
We propose an algorithm to discover functional dependencies from the domain ontology that exploits the inference capabilities of DL-Lite, thus fully taking into account the semantics of the domain. Expand
  • 51
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