The fetch action definition UI is shown in Figure 4.
获取操作定义UI如图 4 所示。
Based on the 2d drawing blocks of standard parts of chemical engineering equipment, parameter and action definition was added in the block, and then the method of parametric design was realized.
图库以化工设备标准件的二维图形作为图块基础，并向块中添加参数和动作定义，从而实现了参数化设计。
If a DELETE rule is not explicitly defined, the on DELETE no ACTION definition is used by default.
如果没有明确定义DELETE规则，将默认使用ON DELETENOACTION定义。
Figure 5 shows an example where the ON DELETE NO ACTION definition will allow a delete operation to be performed that the ON DELETE RESTRICT definition would prevent.
图5显示了一个示例，其中ONDELETENOACTION定义允许执行 ON DELETERESTRICT 定义可能阻止的一个删除操作。
Figure 5 shows an example where the ON DELETE NO ACTION definition will allow a delete operation to be performed that the ON DELETE RESTRICT definition would prevent.
图5显示了一个示例，其中ONDELETENOACTION定义允许执行 ON DELETERESTRICT 定义可能阻止的一个删除操作。
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