DATA MIGRATION METHOD AND APPARATUS, AND ELECTRONIC DEVICE AND COMPUTER READABLE STORAGE MEDIUM

摘要

A data migration method, relating to a big data technology. The method comprises: performing distributed storage on data in a database to obtain an original table, establishing an original table data update time record, and updating an original table data update time in the original table data update time record when original table data is updated (S1); performing a data migration operation on the data in the original table to obtain a new table, and establishing, in the new table, a new table insertion data time record; and performing data consistency processing on the new table and the original table, exchanging table names of the new table and the original table, performing the data consistency processing on the new table and the original table again to obtain the new table after the table names are exchanged, and completing the data migration operation. According to the method, during the migration of data in a data table, a data migration operation can still be performed without locking the table. In addition, the method further relates to a blockchain technology, and the data in the database can be stored in a blockchain.