The foundation of any business is a database. This database, in a realtors case, should have properties that are for sale, buyer information, prospect information, and potential future listings. what you need in a database is one thing, building it is another. To build your database, you can use your website, open houses, and networking events that will help you gain beneficial information for future use. Once you have a database in place, you'll see that your client base will grow stronger.