After applying the PrimaryKey-stereotype a key-icon is visible to the left of the attribute, as shown in Figure 10.
在应用primarykey构造型之后，在属性的左边就会出现一个图标了，如图10所示。
After applying the PrimaryKey-stereotype a key-icon is visible to the left of the attribute, as shown in Figure 10.
在应用primarykey构造型之后，在属性的左边就会出现一个图标了，如图10所示。
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