这个键盘敲击顺序会从拓扑图模型中删除根用户。

This keystroke sequence removes the root user from the topology model.

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只有创建该经销商的用户才能修改或删除这个经销商。

Only the user who created a dealer can modify or delete the dealer.

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这使模式所有者能够控制哪些用户有权在这个模式中创建、修改和删除对象（CREATEIN、ALTERIN、DROPIN 特权）。

This allows the schema owner to control which users have the privilege to create, alter, and drop objects in the schema (CREATEIN, ALTERIN, DROPIN privilege).

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