Answer:
Network service
Explanation:
Database services is cloud-computing service. Using this service the user can work on the database but you need have a expensive system at your work space, no need any software related to database to be installed, no overhead of managing the system, no more configuration is required.
The only thing you require is a system, an internet and all the other things will be available via cloud. Few of these features are free up to certain level and it will be a paid service depending on the service provider.