The Tenor Framework is a set of utilities to improve development of web projects, although it can be used on desktop projects. The main goal is to simplify mapping relational tables to entities, in a simple and maintainable way.
...Create stored procedures, views, and tables on the database side, then use DataLG to create an assembly (and its source) to interact with them. Works with: Ms Sql Server, Sqlite 3, Mysql 4-5, and PostgreSQL.