Integrated Security Authentication Method

Server = localhost; database = northwind; Integrated Security = sspi

Microsoft Security Support providers' interface (sspi) is a well-defined public API used to obtain integrated security services such as verification, information integrity, and information privacy, and security services for all distributed application protocols. The application protocol designer can use this interface to obtain different security services without modifying the Protocol itself.

Integrated Security Authentication Method
If this parameter is set to false, the user ID and password are specified in the connection.
If this parameter is set to true, the current Windows Account creden。 are used for authentication.
The identifiable values are true, false, yes, no, and sspi equivalent to true.

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Indicates that you use the security authentication mechanism provided by windows. In this case, you can open the database without adding UID and password.
If you do not have that sentence, you must write uid = SA in the join string; Password = 00;
Otherwise, you cannot open the database.