how to create db files

[Craig]

I am trying to upgrade from 2.2.13 to 2.3.35 in order to (possibly) fix 
another problem.

But, I am having a ton of problems. At this point, I just want to 
scratch the current DB and start over. However, if I try this, slapd 
complains about not being able to find the database:

Checking configuration files for : bdb_db_open: 
db_open(/var/lib/ldap/id2entry.bdb) failed: No such file or directory (2)

Which makes sense... so, how do I create an empty one?

TIA!