They might be encrypted and impossible to open normally, or they might be fully viewable and editable in a program like SQLite if they're in the SQLite database format.
Ngwa DB ndị a nwere ike zoro ezo ma ghara ịmeghe imeghe nkịtị, ma ọ bụ ha nwere ike kpamkpam viewable ma kwadoro na mmemme dịka SQLite, ma ọ bụrụ na faịlụ DB dị na ụdị data SQLite.