PPM> install DBI
Install package 'DBI?' (y/N): y
Error installing package "DBI": Could not locate a PPD file for package DBI.

PPM> install DBD::ODBC
Install package 'DBD-ODBC?' (y/N): y
Error installing package "DBD-ODBC": Could not locate a PPD file for package 
DBD-ODBC.