1. A computer-implemented method for historically synchronizing configuration data of a computer network, comprising: collecting, from a first database by a configuration server, a first plurality of configuration tables corresponding to a plurality of entities in the computer network according to a hierarchy of the entities when an entity in the computer network has changed; identifying the entity that has changed; adding a history identifier to an entity configuration table of the first plurality of configuration tables, the entity configuration table corresponding to the entity that has changed; and updating a second plurality of configuration tables in a second database with the first plurality of configuration tables.