Logical design of multi-model data warehouses

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