# When should I use `TiDB Data Migration`?

+ Migrate data from a `MySQL-compatible` databases
  + Migrate data to a downstream `TiDB` table with more columns
[https://docs.pingcap.com/tidb/stable/migrate-with-more-columns-downstream](https://docs.pingcap.com/tidb/stable/migrate-with-more-columns-downstream)
  + Merge and migrate data from sharded upstream tables
[https://docs.pingcap.com/tidb/stable/feature-shard-merge](https://docs.pingcap.com/tidb/stable/feature-shard-merge)
  
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