您的代码获取它需要的图像描述符，然后将其添加到图像注册表，并使用键为每个图像描述符建立索引。
The idea is that your code obtains the image descriptors it needs and adds them to the image registry, indexing each one with a key.
外键不仅具有标识记录的标识符，而且还具有标识表的一个类型。
The foreign key has not only an identifier to identify a record, but also a type to identify the table.
正如在表节点描述符上所显示的，在表空间上有10个分区，且用于九个分区的极限键是625,000个。
As shown in the table node descriptor, there are 10 partitions in the table space, and the limit key for the ninth partition is 625,000.
使用扩展指示符支持，单个程序可以基于一个公共键用于单个表的所有更新事务。
With extended indicator support, a single program can be used for all incoming update transactions against a single table based on a common key.
使用扩展指示符支持，单个程序可以基于一个公共键用于单个表的所有更新事务。
With extended indicator support, a single program can be used for all incoming update transactions against a single table based on a common key.
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