as discussed by Eckerson are: Major Characteristics of Top-Down, approach. Acknowledges the reality of change in organizations and systems that make it difficult to implement a formalized architecture. Data Warehouses, just like other traditional Data Management tools, arent going anywhere; their importance will remain key to effective Data Management for many years to come.
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Encourages organizations to share dimensions, facts, rules, definitions, and data wherever possible, however possible. Data : A Data Warehouse only stores data that has been modeled/structured, while a Data Lake is no respecter of data. This reduces redundant data and saves storage space. It allowed for novel correlations that may have not been discovered without this method. With a basic structure, operational systems and flat files provide raw essay for business school admission data and data are stored, along with metadata and summary data, where end users can access it for analysis, reporting and mining.