Method and device for selecting network tables with snapshot relations

The invention discloses a method and device for selecting network tables with snapshot relations. The method comprises the steps that a set of the network tables is sorted according to the content of entity lists of the network tables, wherein the entity lists are attribute lists capable of marking the records of the network tables; in the sorted network table set, according to a preset rule, a plurality of second tables corresponding to a first table are selected, wherein the second tables are the network tables with the snapshot relations with the first table. Through the method and device, the second tables with the snapshot relations with the first table are selected, the second tables can be used for optimizing inquiry to improve the inquiry efficiency and also can be used in a big data environment, and a system can return part of inquiry results in real time.