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How to use the downloaded file:
Unzip the .zip file, using your favorite tool. That leaves you with the license file license.txt and the database file ophelia_merge_oss_c_java.gz
To restore to a mongo database, the following instructions work in a bash terminal in Linux:
1. Extract the compressed file: gunzip ophelia_merge_oss_c_java.gz
2. mongorestore --host localhost:27017 --archive=<YOUR_FILEPATH_HERE>/ophelia_merge_oss_c_java
In the above command, replace <YOUR_FILEPATH_HERE> with the filepath on your own machine.
Then, you can inspect your database (e.g., using the mongo application from a bash terminal)