I couldn't find a location on w3schools to download the database, so I googled it. I found that user AndrejPHP created a query to create the database in SQL, however ...

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2023 年 2 月 14 日之后，IE11 将不再可用。你可以在 Microsoft Edge 中使用 IE 模式重新加载 Internet Explorer 网站。 Microsoft® SQL Server® 2014 Service Pack 3 (SP3) 下载 Microsoft® SQL Server® 2014 Service Pack 3 重要事项！