I have over 20 years of database experience. and over 40 years of work experience. I am seriously old.

The most important thing to remember is that data has meaning and the developer needs to understand that meaning to get correct results and the database should never be used as a black box that the dev doesn't need to understand.

The next most important thing to remember is that the data will persist for many years longer than the current application and that it is usually critical to the operation of the business. As such, data work should generally be the number one priority in development in an Enterprise environment instead of the afterthought.