Multi-model DBMSs, which support different data models with a fully integrated backend, have been shown to be beneficial to data warehouses and OLAP systems. Indeed, they can store data according to the multidimensional model and, at the same time, let each of its elements be represented through the most appropriate model. An open challenge in this context is the lack of methods for logical design. Indeed, in a multi-model context, several alternatives emerge for the logical representation of dimensions and facts. The goal of this paper is to devise a set of guidelines for the logical design of multi-model data warehouses so that the designer can achieve the best trade-off between features such as querying, storage, and ETL. To this end, for each model considered (relational, document-based, and graph- based) and for each type of multidimensional element (e.g., non-strict hierarchy) we propose some solutions and carry out a set of intra-model and inter-model comparisons. The resulting guidelines are then tested on a case study that shows all types of multidimensional elements.

Logical design of multi-model data warehouses / Sandro Bimonte; Enrico Gallinucci; Patrick Marcel; Stefano Rizzi. - In: KNOWLEDGE AND INFORMATION SYSTEMS. - ISSN 0219-1377. - STAMPA. - 65:(2023), pp. 1067-1103. [10.1007/s10115-022-01788-0]

Logical design of multi-model data warehouses

Enrico Gallinucci;Stefano Rizzi
2023

Abstract

Multi-model DBMSs, which support different data models with a fully integrated backend, have been shown to be beneficial to data warehouses and OLAP systems. Indeed, they can store data according to the multidimensional model and, at the same time, let each of its elements be represented through the most appropriate model. An open challenge in this context is the lack of methods for logical design. Indeed, in a multi-model context, several alternatives emerge for the logical representation of dimensions and facts. The goal of this paper is to devise a set of guidelines for the logical design of multi-model data warehouses so that the designer can achieve the best trade-off between features such as querying, storage, and ETL. To this end, for each model considered (relational, document-based, and graph- based) and for each type of multidimensional element (e.g., non-strict hierarchy) we propose some solutions and carry out a set of intra-model and inter-model comparisons. The resulting guidelines are then tested on a case study that shows all types of multidimensional elements.
2023
Logical design of multi-model data warehouses / Sandro Bimonte; Enrico Gallinucci; Patrick Marcel; Stefano Rizzi. - In: KNOWLEDGE AND INFORMATION SYSTEMS. - ISSN 0219-1377. - STAMPA. - 65:(2023), pp. 1067-1103. [10.1007/s10115-022-01788-0]
Sandro Bimonte; Enrico Gallinucci; Patrick Marcel; Stefano Rizzi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/915602
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