它们可以触发具有不同信息的级联更新。
They can trigger cascaded updates with different information.
本文介绍了一种通过增加触发器来模拟主外键，实现级联更新功能的方法。
The article shows one solution that we add triggers to simulate the primary key and foreign key, and then realize cascade update.
在Book类中放入static belongsTo =Publisher，可以向关系添加另一个方面 ——级联更新和删除。
Putting static belongsTo = Publisher in the Book class adds another dimension to the relationship — cascading updates and deletes.
如果在LUW执行中发生错误，此时反转更新可能为时已晚；或者更常见的是，反转更新会导致级联问题。
If an error occurs during the LUW, it might be too late to reverse the updates; or, more typically, reversing the update can lead to cascading problems.
然后以级联方式处理进一步的更新，就像在电子表格中一样：依赖更新后的度量的映射将运行，然后依赖其目标的映射将运行，以此类推。
Further updates are then processed in a cascading fashion, just like in a spreadsheet: maps that depend on the updated metrics update their targets, and so forth.
您的网站应利用不断更新的技术，如级联样式表，以尽量减少html页的代码。
Your website should make use of up-to-date technologies like Cascading Style Sheets to minimize the amount of formatting in the HTML page code.
您的网站应利用不断更新的技术，如级联样式表，以尽量减少html页的代码。
Your website should make use of up-to-date technologies like Cascading Style Sheets to minimize the amount of formatting in the HTML page code.
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