C:\strawberry-perl-5.16.3.1-64bit-portable\scripts>perl -d -e "use DB; print $INC{'DB.pm'};"

Loading DB routines from perl5db.pl version 1.37
Editor support available.

Enter h or 'h h' for help, or 'perldoc perldebug' for more help.

C:/strawberry-perl-5.16.3.1-64bit-portable/perl/lib/DB.pm