Proceedings ArticleDOI
Deriving initial data warehouse structures from the conceptual data models of the underlying operational information systems
Michael Boehnlein,Achim Ulbrich-vom Ende +1 more
- pp 15-21
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This paper shows that the conceptual data models of the underlying operational information systems can support the construction of multidimensional structures and explains the derivation of the warehouse structures from the Conceptual data model of a flight reservation system.Abstract:
In recent years the construction of large scale data schemes for operational systems has been the major problem of conceptual data modeling for business needs. Multidimensional data structures used for decision support applications in data warehouses have rather different requirements to data modeling techniques. In case of operational systems the data models are created from application specific requirements. The data models in data warehouses base on the analytical requirements of the users. Furthermore, the development of data warehouse structures implicates the consideration of user-defined information requirements as well as the underlying operational source systems. In this paper we show that the conceptual data models of the underlying operational information systems can support the construction of multidimensional structures. We would like to point out that the special features of the Structured Entity Relationship Model (SERM) are not only useful for the development of big operational systems but can also help with the derivation of data warehouse structures. The SERM is an extension of the conventional Entity Relationship Model (ERM) and the conceptual basis of the data modeling technique used by the SAP Corporation. To illustrate the usefulness of this approach we explain the derivation of the warehouse structures from the conceptual data model of a flight reservation system.read more
Citations
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Automating data warehouse conceptual schema design and evaluation.
Cassandra Phipps,Karen C. Davis +1 more
TL;DR: These algorithms provide a foundation for a software tool to create and evaluate data warehouse conceptual schemas and propose a guideline of manual steps to refine a conceptual schema to suit additional user needs.
Journal ArticleDOI
Ontology-Based Conceptual Design of ETL Processes for Both Structured and Semi-Structured Data
Dimitrios Skoutas,Alkis Simitsis +1 more
TL;DR: An ontology-based approach is proposed to facilitate the conceptual design of the back stage of a data warehouse by using the use of Semantic Web technologies to semantically annotate the data sources and the data warehouse, so that mappings between them can be inferred, thereby resolving the issue of heterogeneity.
Journal ArticleDOI
A Survey of Multidimensional Modeling Methodologies
Oscar Romero,Alberto Abelló +1 more
TL;DR: This article presents the most relevant methodologies introduced in the literature and a detailed comparison showing main features of each approach is presented.
Proceedings ArticleDOI
Designing ETL processes using semantic web technologies
Dimitrios Skoutas,Alkis Simitsis +1 more
TL;DR: It is argued that ontologies constitute a very suitable model for this purpose and how the usage of ontologies can enable a high degree of automation regarding the construction of an ETL design is shown.
BookDOI
Data Warehouse Systems: Design and Implementation
TL;DR: Students, practitioners and researchers alike will find this book the most comprehensive reference work on data warehouses, with key topics described in a clear and educational style.
References
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Book
The entity-relationship model: toward a unified view of data
TL;DR: A data model, called the entity-relationship model, is proposed that incorporates some of the important semantic information about the real world and can be used as a basis for unification of different views of data: the network model, the relational model, and the entity set model.
Book
Building the data warehouse
TL;DR: This Second Edition of Building the Data Warehouse is revised and expanded to include new techniques and applications of data warehouse technology and update existing topics to reflect the latest thinking.
Book
The data warehouse toolkit: practical techniques for building dimensional data warehouses
TL;DR: This definitive guide succinctly explains how to build a data warehouse by using actual case studies of existing data warehouses developed for specific types of business applications such as retail, manufacturing, banking, insurance, subcriptions and airline reservations.
Proceedings ArticleDOI
Conceptual design of data warehouses from E/R schemes
TL;DR: A graphical conceptual model for data warehouses, called Dimensional Fact model, is presented and a semi-automated methodology to build it from the pre-existing entity/relationship schemes describing a database is proposed.