Part of the problem with ORMs isn't the ORMs, it's the programmers of database systems who don't understand relational models. They understand OO models so the

Part of the problem with ORMs isn't the ORMs, it's the programmers of database systems who don't understand relational models. They understand OO models so they need something to do the conversion for them. ORMs make programming easier, but with anything that makes something easier there are certain things that will be harder, as the author mentions, finding bugs created at the ORM level. Anyone using ORMs is going to be hindered in some way, if they are very creative and if they are creative, but not adept at doing what it is they will want to do without the ORM, then the application and end user may suffer.