NB. data driver utilities

NB.*ddcon v connect to data source
NB.*dddis v disconnect from data source
NB.*ddsql v prepare, execute, and end sql statement
NB.*ddfet v fetch next record from selected data
NB.*ddcol v column names in the table
NB.*ddcnm v column names selected by ddsel
NB.*ddsrc v data source names available from ODBC manager
NB.*ddsel v prepare and execute sql statement (selection)
NB.*ddend v end sql statement started with ddsel
NB.*dderr v error info on last command (name, source, warning, msg)
NB.*ddtrn v begin transaction
NB.*ddcom v commit transaction
NB.*ddrbk v rollback transaction
NB.*ddtbl v selection handle for tables in data source
NB.*ddfch v as ddfet, but with data in columns
NB.*ddcnt v rowcount of last ddsql command
NB.*ddcheck v check response, display any error message

require 'dll odbc'
