ASP.NET-полезное (SQL Lite)

http://sqlite.phxsoftware.com/

System.Data.SQLite is the original SQLite database engine and a complete ADO.NET 2.0/3.5 provider all rolled into a single mixed mode assembly. It is a complete drop-in replacement for the original sqlite3.dll (you can even rename it to sqlite3.dll if you're using it natively).

А так же
http://www.rusdoc.ru/articles/ispolzovanie_sqlite_v_net_prilozhenijax/18467/