migration questions

Database migration in PostgreSQL involves moving or altering database schema and data. Tools like `pg_dump` and `pg_restore` can be used to backup and restore data. For more complex migrations, tools like Flyway or Liquibase are useful. You might use `pg_dump` to create a backup: `pg_dump mydb > mydb_backup.sql`, and `pg_restore` to apply it to a new database. Make sure to test migrations in a staging environment before applying them to production.

Database migration involves transferring data between different database systems or versions. This can be achieved using tools like `mysqldump` for exporting and importing data or third-party migration tools. For instance, exporting a database with `mysqldump` and importing it to a new server using `mysql` command facilitates migration.