Business. Click "more" for Tutorial Center link. Researchers and entrepreneurs are provided with comprehensive business and demographic information valuable to assess business viability, create sales leads and marketing mailing lists, complete location analyses and business plans, analyze population trends, find potential sponsors and donors and much more. This versatile database is useful for those who want to start a business as well as those who want to take their established business to the next level. Michigan residents or Michigan library access only. Tutorial Center link.