I have always told this in my classes to my students: managing a database is just like driving a car... it means everyone drives a car but few have a proper knowledge of driving rules, they just drive because they learnt how to do it and the rest is pure instinct... and this sometimes can lead to accidents.
In the database world it is exactly the same, both developers and administrators can manage a database, they just need to install the software, suggest a model using their intuition and load the data... that's it, it may work very well, but just a proper knowledge of the inner workings of a database engine can maintain data integrity for good.
The main factor that makes different one company or person from another is not only the data but how they manage and use this data.
Just a thought
AFL