markdown/datamgmt/load/g-creating-and-using-web-external-tables.html.md.erb

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title: Creating and Using Web External Tables
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`CREATE EXTERNAL WEB TABLE` creates a web table definition. Web external tables allow HAWQ to treat dynamic data sources like regular database tables. Because web table data can change as a query runs, the data is not rescannable.

You can define command-based or URL-based web external tables. The definition forms are distinct: you cannot mix command-based and URL-based definitions.

-   **[Command-based Web External Tables](../../datamgmt/load/g-command-based-web-external-tables.html)**

-   **[URL-based Web External Tables](../../datamgmt/load/g-url-based-web-external-tables.html)**