If there is a need to find a complete list of modules installed on your Magento 2, follow the steps:
All the currently available modules (Magento-provided, 3rd-party modules) can be enabled or disabled. You should keep in mind definite modules are dependent on other modules. In this case, you won’t manage to enable or disable such modules. Besides, there are conflicting modules that can’t be enabled at the same time. Click to follow the link and get additional information.
To find the dependencies of a module see the require field in the composer.json file for each module. To see conflicts of a module go to its conflict field in the composer.json files.
php bin/magento module:enable Schogini_Firstdataglobalgateway
php bin/magento module:disable Schogini_Firstdataglobalgateway
php bin/magento module:uninstall Schogini_Firstdataglobalgateway
To learn how to completely uninstall an extension see here.
Having enabled one or several modules, use the next command to update the database: magento setup:upgrade.