New database from old

[lightspeed2011]

Hi,

Looked around the site; didn't find any specific reference.

2 questions about creating databases - 1 without downloads, 1 with.

1 - Can I create a new database from a subset of an existing database?
i.e. take WO races from demo_database and create a wo_database.

2 - Use previously downloaded races to create a new database
same premise as WO above; but using races I've already downloaded.
i.e. using data from cache or pp folders

Thanks.
Bob