A Method to Ensure the Results of Queries on the Outstanding Database Based on the Game Theory

The widespread use of the web and development of ICT led to the emergence of a new trade called "database as a service". In this competitive environment, individuals and organizations who find it difficult to manage and maintain their database hire companies that can provide extensive services in the field. Great effort has been made to ensure the integrity of the results of queries on outsourced databases, and a variety of methods have been proposed. However, what is shared between all these methods is that all solutions are offered with high financial considerations by those in the outsourced database business environment. This paper introduces database outsourcing as a business game with four major players: external server, data owner, user and enemy with financial and non-financial interests. It then proceeds to present a way, using the Game Theory, to ensure the integrity of the results of the queries on outsourced databases. This method considers the financial and non-financial interests of the players to be a threat to the integrity of the results of queries, and provides a solution to eliminate this threat. It is believed that this paper can provide useful guidelines for each of the participating parties in business contracts related to database outsourcing, from the service provider to the data owner and the customer.customer.