What are some of your most useful database standards?

Answer 1

13- Evaluate your queries

Thats true. Sometimes you don't get what you wanted.

For me, it's always useful to name the tables and fields with their exact content and (for us) in clear spanish and using Upper Camel Case, with no whitespaces:

User Name: NombreUsuario

First Last Name: ApellidoPaterno

Second Last Name: ApellidoMaterno

etc etc