Modules
Roles for DBI handles
restart DBI calls after reconnecting on failure
buffer write-only queries.
Exports callbacks to override DBI calls.
Flattens arrays passed as parameters to DBI calls into strings.
change defaults to < RaiseError = 1 >>
Exports SQL commands insert, select etc as methods.
Share DB connection handles
Treats any method reached AUTOLOAD as a call to a stored procedure.
allow nested transactions.