Integrated Security means the form of authentication of the bank:
- if "false", you must enter login and password in the connection string;
- if "true", no login/password is required as the authenticated user will be used in Windows.
Persist Security means whether the login information will be saved or not when there is a connection.
- if "false", at code level, once made the connection, you can get the connection string information least login/password;
- if "true", the connection string information is returned including login/password;
Of course if you use Integrated Security=true
, Persist Security=true
becomes irrelevant, since the login/password information will not be present in the connection string.
More details here: Connection string