[development] Supporting PostgreSQL schema level

[Chris Johnson]

Actually, MySQL is the exception for NOT implementing SQL standards.
All of the big commercial databases and Postgres support database
objects named by a hierarchical triple.

In Postgres, they are:

database.schema.object

In Oracle, they are:

database.owner.object


MySQL only implements the last 2 positions:

[missing.]database.object

In MySQL, a database is analogous to a Postgres schema.