When you have a database, you will not be interested in those specific customers in your specific products. You can also see the profiles of people who are interested in specific products and buy those products.
If a business market database is installed properly, this will monitor the effect of your strategies. You will better identify strategies that will work better than others, you are more effective in your future efforts. Marketing database allows you to focus more on the establishment of your target market, if you do so, you are more likely to save more money because you can only contact people who have the possibility to shop is there.