Historical version backtracking method for vector layers and pattern spots

The invention discloses a historical version backtracking method for vector layers and pattern spots. The method comprises the following steps: creating a layer information table and a layer updating table in a database; when the vector database is stored, judging whether the vector database is stored for the first time or not, if yes, creating a new layer in the layer information table according to the data content of the vector data to be stored, adding layer updating information into the layer updating table, then creating a data storage table, and storing the vector data to be stored into the data storage table; otherwise, performing data modification on the basis of the previous version of data table according to the updating type; querying layer data of the target vector layer at the target time point version; and according to the queried layer data, tracing the change of the target pattern spots in the target vector layer in each version, and obtaining the association relationship of the target pattern