If you're considering using MySQL Cluster, you might be tempted to try it out on one of your existing databases. MySQL Cluster 7.3 (available as a development release at the time of this post) supports foreign keys, so it seems sensible to try migrating an InnoDB database with foreign keys to MySQL Cluster.
What won't work For this example, I'm using the world_innodb.sql script available from the MySQL sample databases. It's a simple database with three tables: Country, City, and CountryLanguage. Both City and CountryLanguage have foreign keys referencing the Country table's Code field.
So, you might try something like this:
ALTER TABLE Country ENGINE=NDB; ALTER TABLE City ENGINE=NDB; ALTER …[Read more]