When migrating Magento 1 to Magento 2, you might wonder which tool to effectively handle the database migration.
Beside the default Magento migration tool, you might want to check out an alternative - UB Data Migration Lite (Free): https://goo.gl/VFWxkM
This tool allows you to port all your key data settings, websites, stores, attributes, categories and products to Magento 2. Even though this Lite version does not grant you the full features to migrate Customers, Sales data etc. Yet it is handy to help you test the water and see how to cope with the data migration without hassles.