US Patent 11100087 Data tokenization system maintaining data integrity

A system to tokenize values may include a processing unit; a storage device comprising instructions, which when executed by the processing unit, configure the processing unit to: receive a data item with an original value from a first storage system; store the data item in a staging table; transform the original value of the data item in the staging table to a changed value based on a stored rule; store a mapping between the original value and the changed value in a library table; and transmit the library table to a second storage system configured to update a database table at the second storage system based on the library table.