Data Modeling: Model: Model is business representation of information in one or more data sources OLTP DWH Model Model Model E-R Model (modify wih ETL) Dimensional model (Design based on (Design based on facts and Measures) Entities&Relationships) Dimensional Modeling: Is a design methodology for designing a DWH It consists of following 3phases to design the Database 1)Conceptual Modeling: • Understanding the requirements • ...
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