SQL & PL/SQL

Hi all.

I would like to know the correct Style for PL/SQL programs, I read this link: http://www.adaic.org/resources/add_content/docs/95style/html/cover.html provided by Billy Verreynne, it's the Ada 95 Quality and Style Guide.

My confusion is related to the capitalization of PL/SQL reserved words, I write it in uppercase (as many others in this forum) but Billy says this is incorrect because PL/SQL is an implementation of the Ada language and using uppercase for reserved words violates the standards specifications of all major languages and environments of today.

I have read other links like this: http://www.timehole.com/CG_jm2.php and it says the opposite, maybe Billy is right but I would like to know your opinion and if you know about another guide related directly to PL/SQL.

Thanks to all.

Regards.