One, SQL Server download and install
1.1 Download from the official website of SQL Server 2019
After the download is successful, the first installation package will appear
1.2 Start the installation, right-click to run as an administrator 
1.3 Select: Basic
1.4 Select: Chinese simplified, accept
1.5 Select the installation path, it is recommended to modify the root directory directly, install
1.6 Select: Link now, a DOS window like the following will appear, don’t worry, close
1.7 DOS window can choose: install SSMS, it will automatically jump to the SSMS download page , and then select close.
2. SSMS download and install
Click: Available languages 
Select the corresponding language: Simplified Chinese
2.2 After downloading, the following installation package appears
Right-click to run as an administrator 
2.3 Select the installation path
2.4 Restart
3. Log in to SQL Server
3.1 Start menu, find: Microsoft SQL Server Management studio, click to open
3.2 Enter the name of the machine, select the connection
3.3 Select: File -> New -> Use the current connection query
3.4 Enter the command:, create database teaching;click to execute
