Supply a database name and alias.

提供一个数据库名和别名。

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And once a database connection is established, the customized prompt also shows the alias of the connected database.

并且一旦建立了数据库连接，定制的提示符还会显示所连接数据库的别名。

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If you have explicitly cataloged an alias name after database creation, use the alias name.

如果在创建数据库后，您已显式编录了别名，请使用别名。

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