File is not a database

[ramoonmedeiro]

Hello, the files below are not a database:

extra_practice_database.db: file is not a database
surgetech_conference.db: file is not a database
weather_stations.db: file is not a database

[thomasnield]

Hi there! Did you make sure you unzip the files? I just spot-checked a few of the databases and confirmed they are working.