# doctl databases options > Enable the navigation of available options under each database engine. > More information: . - Run a `doctl databases options` command with an access token: `doctl {{[d|databases]}} {{[o|options]}} {{command}} {{[-t|--access-token]}} {{access_token}}` - Retrieve a list of the available database engines: `doctl {{[d|databases]}} {{[o|options]}} {{[eng|engines]}}` - Retrieve a list of the available regions for a given database engine: `doctl {{[d|databases]}} {{[o|options]}} {{[r|regions]}} --engine {{pg|mysql|redis|mongodb}}` - Retrieve a list of the available slugs for a given database engine: `doctl {{[d|databases]}} {{[o|options]}} {{[s|slugs]}} --engine {{pg|mysql|redis|mongodb}}` - Retrieve a list of the available versions for a given database engine: `doctl {{[d|databases]}} {{[o|options]}} {{[v|versions]}} --engine {{pg|mysql|redis|mongodb}}`