type-safe, non-relational, multi-backend persistence; profiling libraries

 This libraries allows Haskell applications to access a database or other data
 storage sytems in a type-safe, non-relational way.
 .
 This library provides just the general interface and helper functions.
 You must use a specific backend in order to make this useful.
 .
 This package provides a library for the Haskell programming language, compiled
 for profiling. See http://www.haskell.org/ for more information on Haskell.