Conventional Data Warehouses
The advantages of using conceptual models for designing applications are well known. In particular, conceptual models facilitate communication between users and designers, since they do not require knowledge about specific features of the underlying implementation platform. Further, schemas developed using conceptual models can be mapped to various logical models, such as relational, object-relational, or object-oriented models, thus simplifying responses to changes in the technology used. Moreover, conceptual models facilitate the maintenance and evolution of applications, since they focus on users’ requirements; as a consequence, they provide better support for subsequent changes in the logical and implementation schemas.
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