OrmSimple is a ORM for FirebirdSql (http://firebirdsql.org), based on Demis Bellot's ServiceStack.OrmLite (http://servicestack.net)

For usage samples see :

https://github.com/aicl/ormsimple/tree/master/src/TestSimpleFirebird01

https://github.com/aicl/ormsimple/tree/master/src/TestSimpleFirebird02

https://github.com/aicl/ormsimple/tree/master/src/TestSimpleFirebird03

https://github.com/aicl/ormsimple/tree/master/src/TestSimpleFirebirdProcedures

If you already have a firebird database you can use ClassWriter to generate CSharp code for each table and procedure. See https://github.com/aicl/ormsimple/tree/master/src/Maquinaria

To run samples you must use employee.fdb from https://github.com/aicl/ormsimple/tree/master/fbdata