SQL Server login problem
1. The user name and password
SQL Server default user name: sa, the password for the password when you install SQL Server
If you forget the password can select Windows Authentication, and then change the password
2. Sign in error
2.1 first with Windows authentication login, username state property were changed to accept the grant and
properties 2.2 Click Database -> Security: Change below
2.3 open SQL server configuration manager, will be shown all three services restart
2.4 restart and sign in
