How to merge databases

Hi.
I recently had a drive failure, and had to reinstall. A few days after i managed to recover old NetWorx files.
Is it possible to import old DB by merging the two databases, not replacing one for another? i seem to remember there being a way but can't remember how i did it before (or i might remember wrongly and and it was another app).
Thank you

It is possible, with some skills required. You would need to download an SQLite database manager, for example SQLite Spy:

Then you have two DB files (old and new) you can transfer the data from the new one to the old one by doing the following:

1. Run SQLite Spy
2. Choose File - Open Database and open the old file (it should display as 'main')
3. Choose File - Attach Database and open the new file (it should display as 'networx'.
4. Type in the following query:
   

     INSERT OR IGNORE INTO main.usage SELECT NULL, USER_NAME, DAY, HOUR, DATA_IN, DATA_OUT, DIALUP_DURATION FROM networx.usage  

5. Choose Execute - Execute SQL.

This will only transfer usage data, but not applications or visited web-sites. I also recommend to backup the databases before merging, in case something goes wrong with the transfer.