SQLiite Database Engine – SQLITE.EXE
SQLite.exe is a in-process library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. The code for SQLite is in the public domain so it is found in a number of programs including Mozilla Firefox, Skype, the Adobe Acrobat reader and more. You'll find more information at http://www.sqlite.org/famous.html.
You may also see files with names like etilqs_7uskvgpey8hw3blgg9nk and other files starting with etilqs_?????? (where ?? are random letters and numbers) may be found in your c:\Documents and Settings\Owner\Local Settings\Application Data\ folder (Windows 95/NT/98/ME/2000/XP) or c:\Users\\AppData\Local\ (Windows Vista, Windows 7). The word etilqs is SQLite spelled backwards. These appear to be SQLite related temp files that appear when using a Mozilla browser. These files started cropping up after a recent sqlite update. You'll find more information at http://www.sqlite.org/changes.html.
Safe
SQLite.org