Table Prefix, Mysql Database name

I just installed wordpress and reading tutorial’s they all kindly suggest me to change the Table Prefix name.

The default name is wp_ ( two characters and one _ )

I am thinking to change to something like this:

white_glue_city_

or

white_glue-city_

or

white_glue.city_

Is a problem if the database name have 33 characters and I am using . and _ and - as separators between words?

Unquoted names can consist of any alphanumeric characters in the server’s default character set, plus the characters ‘_’ and ‘$’

says http://www.informit.com/articles/article.aspx?p=30875
So just stick with _ to seperate your words.

Thank youuuuuuuuu ! >:D<