To run these tests, make sure haskelldb is installed with the database driver you want to use. Then, in the test/ directory: ghc --make DescDB1.hs ./DescDB1 ghc --make RunTests.hs To test against postgres, using HDBC, first update test-hdbc-postgresql.hs with appropriate login information. Then: ghc --make test-hdbc-postgresql.hs ./test-hdbc-postgresql And similarly for the other database and driver combinations.