Qlik Sense supports the OLE DB(Object Linking and Embedding, Database) interface for connections to external data sources. A great number of external databases can be accessed via OLE DB.
Security aspects when connecting to file based OLE DB data connections
OLE DB data connections using file based drivers will expose the path to the connected data file in the connection string. The path can be exposed when the connection is edited, in the data selection dialog, or in certain SQL queries.
If this is a concern, it is recommended that you connect to the data file using a folder data connection if it is possible.