Hello Rania,
Yes, it is possible to control access to data connections in a shared space in Qlik Cloud. The access control is based on the roles of the users:
- Tenant admins : can access data connections in all spaces.
- Analytics admins : can only access shared and managed spaces
- Data admins : can only access data spaces
The user who creates a data connection automatically becomes the owner of that connection and is, by default, the only user who can access the data connection. The data connection can be shared with others through security rules defined in the QMC. When you move a data connection, both you (the admin) and the data connection owner must both have, at minimum, edit permissions on the space to which you are moving the data connection. Data connections can be moved from a shared to a managed space and from a managed to a shared space.
So, users can create applications and use only the data connections available in the space, but the access to these data connections is controlled by their roles and the permissions set by the admins.
Please take a look at the links below regarding this topic
Managing data connections | Qlik Cloud Help
Data connections | Qlik Sense for administrators Help
