Made me wonder too...

A little exploration revealed that on Win|Active State 5.014, there is no sqlite.exe or sqlite3.exe in Perl's directories. Rather, C:\>dir sqlite*.* /s/a tells us:

Directory of C:\Perl\lib\auto\DBD

01/29/2012  07:38 PM    <DIR>          SQLite
               0 File(s)              0 bytes

 Directory of C:\Perl\lib\auto\DBD\SQLite

10/07/2011  04:27 PM                 0 SQLite.bs
10/07/2011  04:27 PM           487,542 SQLite.dll
10/07/2011  04:27 PM               804 SQLite.exp
10/07/2011  04:27 PM             2,170 SQLite.lib
               4 File(s)        490,516 bytes

 Directory of C:\Perl\lib\auto\share\dist\DBD-SQLite

10/07/2011  04:27 PM         4,438,903 sqlite3.c
10/07/2011  04:27 PM           306,213 sqlite3.h
               2 File(s)      4,745,116 bytes

 Directory of C:\Perl\lib\CPANPLUS\Internals\Source

01/29/2012  07:38 PM    <DIR>          SQLite
04/22/2011  02:42 PM             9,627 SQLite.pm
               1 File(s)          9,627 bytes

 Directory of C:\Perl\lib\DBD

01/29/2012  07:38 PM    <DIR>          SQLite
05/30/2011  12:30 AM            67,126 SQLite.pm
               1 File(s)         67,126 bytes
[download]

The list continues with instanges from other packages -- Adobe Reader 9, for instance, has a .dll (no version number in the filename) about half the size of that provided by DBI; LibreOffice has still another that runs to 400K.

Interestingly (to me anyway) is that yet another program -- a commercial package for syncing my fone with an old Palm PIM -- has two .dll's:

503,202 sqlite3_3_6_16.dll
559,244 sqlite3_3_7_5.dll
[download]

Tentative conclusion: providers, including AS, pick and chose which version of sqlite3 they utilize... and may rename to their own taste.

Afterthought speculation: Were my Linux box not still recouperating from a drive transplant and other surgery, I'd bet on finding a standalone version of "sqlite3.exe" there (as I do on another drive on the Win7 box) ... but by the name of "sqlite" -- perhaps others will check names and versions on RedHat, Debian, etc....