I wish to build a database that have different levels of categories. For example, A big category of countries, and then sub-group of states, cities...etc....

However, my understanding of DBMan is that it cannot group data into groups, because the search result can only be sorted by one field name only.

So I thought of overcoming this problem by setting a seperate database for each sub-group. However, then I can only search for one database at a time. Are there any way to overcome this problem??