You also don't have to specify a name for your history table, but anonymous tables make me uncomfortable so I've assigned the name SalesOrderHistorical to my table. In Azure SQL Database you can also ...

PostgreSQL’s Database Structure Logically, PostgreSQL employs clusters, databases, schemas, tables, columns, indexes, views, functions, triggers, and sequences. Clusters contain databases managed by a ...

But multivalue database schemas are less rigid than conventional relational database schemas. Unlike relational databases, multivalue databases can assign more than one value to a single attribute.