Doesn't need to be a database, a simple spreadsheet or text file would do as well.
And you would be surprised to know how frequent those are (not necessarily about Twitter but in general about customers/employees/visitors in shops etc.)
And you would be surprised to know how frequent those are (not necessarily about Twitter but in general about customers/employees/visitors in shops etc.)
The above happened under the 1995 DPD regime, the GDPR would probably be even more useful.