1)Why did Nationwide need an enterprise-wide data warehouse? Ans : As Nationwide's Business grew each and every unit was working independently which gradually led to lot of data duplication and errors They were facing extreme data redundancy- repeated data & problems when they had mergers thus this rasied a call for enterprise wide data warehouse. 2)How did integrated data drive the business value? Ans : They have all the data about the customers in one place now. Reporting Data , Financial Data and Merger Data was at one palce now this helped them to create a healthy relationship with the customers by knowing about their customers and retaining them . 3)What forms of analytics are employed at Nationwide? Ans : Descriptive, predictive and prescriptive data. 4)With integrated data available in an enterprise data warehouse, what other applications could Nationwide potentially develop? Ans : The case study describes other applications such as Customer Knowledge , Nationwide's goal state rate , Management Legacy Reporting ****9!!-*i-sl-*dexl-ie-k'k*iexl-iei-*******il-kicira*itsl-************************* Why did Nationwide need an enterprise-wide data warehouse? With more than 188 business units offering a variety of products, Nationwide experienced duplication of effort in gathering data, analyzing it, and generating reports. Data-processing environments were widely dissimilar, and there was extreme data redundancy, resulting in higher expenses. Mergers and acquisitions only added to the difficulty and cost. A single, authoritative data warehouse would apply best practices and provide clean, consistent, and complete data