Data science

  Data : Data is very important for any organization to continue its organization. The data may be related to employees in the organization. Data plays an important role in our lives for example a chain of hospitals contain data related to medical reports and prescription of their patients. A bank contains thousands of customers’ transaction details share market data representing minute-to-minute changes in the values of the shares. In this way, the entire world is roaming around huge data. Data may come from various sources. For example in business organizations, we may get data from the sales department purchase department, production department, etc. Such data is stored in a system called ‘ Data warehouse ’. We can imagine data warehouse as a central repository of integrated data from different sources. Once the data is stored. We should be able to retrive it based on some pre-requistics. A business company want to how about how much amount they had spent in the last 6...