I'm confused about the differences between a namespace and a database.
I understand that a database is a single IRIS.DATA file in a directory in the os hosting IRIS.
What is the difference between a namespace and a database?
Can I write data into a database without specifying a namespace?
If so how do I write to a particlar DB in objectscript?
Does a database have to be in a namespace?
Can a database be in more than one namespace?
Can a namespace have only one 'routine' database and only one 'data' database?