SQL queries in Haskell

We're currently developing a project in my gradutaion course (Computer Science), about databases in Haskell. We didn't manage to write the correct Haskell code for the "Insert" and "Delete" operations. If you could help us with this, we would be very grateful. Best regards, Joao Marcos jmfa@terra.com.br joao@dcc.uesb.br