In this paper, relational database access policy for the clues, to discuss database access optimization strategies. Relational database access in connection handling operation is a key factor affecting the efficiency of queries The algorithm is based on uplink and downlink reduction strategy to strengthen the relationship between the database access method applied to the actual sales information management system, by evaluating the algorithm of the scheduling, system operation showing a reduction for the upcoming completion of lower-priority tasks to occupy, reducing the waste of processor resources to improve the mission success rate.