No, there was no DBI package with XAMPP. The only other "DB"-starting package was something like DB_filter (that Windoze) computer has been updating for some time now--something I had no choice in--making it inaccessible. Hopefully it's close to finished with that now so I can continue working on it.
I guess that's why I assumed that the "DB.pm" must be the equivalent for DBI. There was no other package that looked anywhere close. Meanwhile, I've begun the process (interrupted) of trying to install DBD::mysql, but found I needed nearly a GB of additional installs to enable a C compiler before "make" would even do anything on it...still trying to get the compiler going. It involved yet another major package install...this time MinGW.