Hi Dilushan, you're touching a tough topic here: migrations in distributed database systems. We have written an article about it, which might be helpful: https://sync-tank.com/distributed-migration-strategies/.
Best, Johannes Am Do., 15. Aug. 2019 um 12:35 Uhr schrieb Dilushan Delgoda < ddilus...@gmail.com>: > When we want to add new column in RDBMS we can add column with a default > value that will fill up all past records with specified default value. In > our case we want add a new attribute to a Couchdb document. After that code > expect that attribute to be there even in past records. How we going to > implement that sql like behavior in Couchdb. > > -- > Regards, > Dilushan Delgoda >