First create a database and name it userdemo.
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Newly created Create a table on the database, as shown below. The first column of the table is called userid. The primary key is set to not be empty and is automatically increased.
Add a new column to the table by adding a field.
After the table data is designed, you can click Save.
Expand userdemo and you will see the table you just created. Double-click to open the table and add data to the table.
After adding data, if you want to add or delete a piece of data, click the icon as shown in the picture.
In a piece of data, you can only enter the values of username and password, but when you Ctrl s to save it will automatically add the value of userid, because we set it before The primary key is automatically incremented. After you add a piece of data to save, as shown in the figure, you will see the statement it inserted.
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