Preparing the Ingredients

  • Depending on where you find them your ingredients may need different degrees of preparation
  • If you go out and pick your data straight from OLTP applications you will have to convert it to a star schema yourself.
  • If you get your data from a data warehouse much of the preparation will  have already been done.
  • Sometimes in the middle of preparing your data you will realize you need more data or different data and you would have to go back to the step of gathering data.