Within this layer, you will find everything related to the data: connection Settings, validation parameters, relations, etc.

在这个层中，可以找到所有与数据相关的内容：连接设置、验证参数和关系等等。

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Which database to use is stored in a Settings file, and the model layer is the same no matter what option you choose.

在设置文件中储存了可以使用的数据库，选择哪个数据库对模型层没有任何影响。

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If you are adding a "Drop shadow" layer effect, and you have the layer Style dialog open to the Drop shadow Settings, you can move the shadow around by clicking and dragging in the image.

如果你下大添加一个“投影”的图层效果，并且你已经打开了图层样式的对话框并进行了投影设置，你可以通过点击并拖动图形的阴影来移动图形的投影。

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