Tipically in a Tea program only connections to a single database are
established. This function, in conjunction with
tdbc-set-default, makes it easier to create
connections to that single database. At the start of the Tea program
a call to tdbc-set-default is made to define the
database connection parameters. From then on calls to
tdbc-connection will create
TConnection instances connected to that particular
database.
It is the caller responsability to explicitly close the
TConnection obtained in this way.
