Categories / Sub-Categories

Hi All,

I am about to embark on my first geo project ! I’m rebuilding a custom built application.

As you know data model / architecture decisions are critical so want to bounce an idea / see what others are doing & learn about best practice.

I have a deep categorisation structure.

For example: 25 main categories and each main cat has about 10 sub categories – an example might be:

Accommodation
– Hotel
– Motel
– etc.

Is it best to have these all loaded as categories in that taxonomy

or

Is it better to have only the main categories loaded in the cat taxonomy and the sub categories loaded as “tags”

I’m thinking from a customer / user experience – having massive drop downs to choose categories – or can GEO do nested drop downs – so choose main cat first then show sub categories?