Besides comparing between objects in the same project, you can choose to compare the data model against a database or DDL script.

除了比较同一个项目中的对象外，还可以选择将数据模型与一个数据库或ddl脚本进行比较。

youdao

This SQL script will create the data model used in our example.

这个 SQL 脚本可以创建我们示例中使用的数据模型。

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Choose DDL script if you are creating a model from an existing DDL file that you have.

如果要从现有的DDL文件创建模型，就选择ddl脚本。

youdao

But this model of marriage has left many less-educated, less well-off Americans without a viable life script.

WSJ: The New Unmarried Moms