The new IBM DB2 11.x collaboration features are provisioned by IBM’s cloud platform called Bluemix. IBM’s Bluemix provides several IaaS (Infrastructure as a Service) and PaaS (Platform as a Service) c...
While the SQL standard allows multiple NULLS in a unique column, and that is how Postgres behaves, some database systems (e.g. MS_SQL) allow only a single NULL in such cases. Users migrating from othe...
