[PyQt] sql database questions

[Scott Frankel]

After reading the documentation and working through example code, I'm  
still left with a number of questions regarding how to add, close, and  
remove databases.  Although my app appears to be working properly, I'm  
getting an error msg that I'd like to understand and clean up:

	QSqlDatabasePrivate::removeDatabase: connection  
'qt_sql_default_connection' is still in use, all queries will cease to  
work.

When I add a database, I attempt to set its name:

			self.db	   = QtSql.QSqlDatabase.addDatabase("QPSQL")
			self.db.setDatabaseName("foo")

The docs say that the connection is referred to by the  
connectionName.  Though when I call  
QtSql.QSqlDatabase.database().connectionName(), it returns  
'qt_sql_default_connection'.  The QT docs I found for  
setDatabaseName() show an example that does not look at all like a  
simple name:  (DRIVER={Microsoft Access Driver ...  And the example  
that ships with PyQt demonstrates how to load a db in memory.

Is it possible/wise to remove the default database?  Should I call its  
close() method first?  e.g.:

			connectionName    = QtSql.QSqlDatabase.database().connectionName()
			QtSql.QSqlDatabase.removeDatabase(connectionName)

Thanks in advance for suggestions on how to manage my db connections!
Scott