Real Estate inc. (AREI) sells houses. People who desire to sell their houses sign a contract with the AREI and offer the information on their house. This information is kept in the database by AREI and a subset of this information is transmitted to the city-wide multiple listing service utilized by all the real estate agents. AREI works with two kinds of the potential buyers. Some buyers have an interest in one specific house. In this case, AREI prints information from its database that the real estate agent utilizes to help show the house to the buyer. Other buyers seek AREI’s advice in determining a house which meets their requirements. In this case, the buyer completes a buyer information form which is entered into a buyer database, and AREI real estate agents utilize its information in order to search AREI’s database and the different listing service for houses which meet their needs. The results of these searches are printed and utilized to help the real estate agent show houses to the buyer.