OrmDB is a simple, fast and lightweight embedded .NET ORM tool which was inspired by the equivalent other tools.
OrmDB works across .NET ADO providers such as MsSql, MySql, Oracle and PostgreSql.
You dont need the re-write the queries for different databases with OrmDb. You can execute the command on different databases with native connectors.
OrmDB prepares your commands for you.
Please refer to Wiki
for further information.