[daigoba66]

> transmogrifying

Also known as "mapping"; the literal purpose of an ORM. :)

Other big tools/frameworks include APIs for query generation, unit of work, caching, etc., which are not always necessary or desired.

[mmgutz]

Data mappers map tables to objects.

ORM's compensate for the impedance mismatch between objects and tables. They do a lot more than mapping.