Is it ok to have Field names with spaces?

[Galaxiom]

In my experience the Caption property of the field is the worst thing ever in Access. Far worse than table level lookups.

 

[RainLover]

4. Avoid long, long field names (such as field names that are 100+ characters long! - I had to work with a db once where someone named all their fields like this:
Are_you_21_years_old_or_at_least_18_years_old_starting_on_Dec_of_this_year. (imagine every freakin field name like this.)

I have had the following.

__________cat
________cat
_____________cat

Etc