Frans Bouma has been working (is in crunch-mode) on LLBLGen Pro for some time and I'm really looking forward to the release. LLBLGen Pro is the big brother of the DAL generator LLBLGen and generates a complete O/R mapper.
Below is an excerpt of his blog in June when he announced about version 2.
Next Monday is the official release date!
At the left you see the entities found automatically by the tool and all the relationships which are detected and added automatically (in other words: you add all these entities and their relationship definitions with 2(!) mouseclicks). In the middle you see the current state of the entity definition editor (not finished yet). Any change made is reflected directly in the project explorer at the left, everything related is updated, including the relations. At the right you see the catalog explorer, which lets you browse through all the schemas in the catalog of the project, including all tables, fields, stored procedures, resultsets and views.