Assume that you are the Director of Information Technology at a major national company that makes and sells fine clothing through mail order catalogs. Your company has the ability to customize each mailing to fit the specific needs of different target groups. You are interested in decreasing the expense of mailing your catalogs while increasing the amount of sales. You have access, through a very affordable seller of information and from your own database, to critical information about a wide range of potential customers. This information includes previous purchases, buying habits, price ranges, etc. What type of system would you propose building and why?