如 图10 所示，这个模式扩展了其他模式，它允许用户更新主数据集和辅助数据集，或者创建在后端系统上的持久化新记录。
This pattern, shown in figure 10, extends the other patterns by enabling a user to update primary and secondary data sets or to create new records that are persisted on back-end systems.
由于对于每个记录只需处理少量的数据，这种查询可以很好地进行扩展。
Because you're dealing with a small amount of data for each record, this kind of query scales pretty well.
扩展应用事件的一个例子就是在启动时向数据库增加新的记录。
An example of extending the application events is to add new records into the database at the bootstrap time.
所需的扩展数量取决于要记录的数据量和每个扩展的大小。
The number of extents needed depends on the amount of data to be logged and the size of each extent.
现在您可以了解如何通过扩展插件为本地数据库的records表提供简单的记录计数器来操作简单的Derby数据库。
Now you can find out how to manipulate a simple Derby database by extending the plug-in to provide a simple records counter for the records table of the local database.
扩展到明细允许你查询来自被选单元格中包括计算合计的数据源的记录行。
Expand to detail allows you to query for the rows from the source data that were included for calculating the aggregated value in the selected cell.
该软件直接读取图形文件，通过扩展数据和扩展记录来保存管子的尺寸数据，通过管子的轴线位置来获得管子的位置。
The software can directly read the drawing file, and store the pipe size in the extended record and extended data, and retrieve the pipe position by the axis position.
该软件直接读取图形文件，通过扩展数据和扩展记录来保存管子的尺寸数据，通过管子的轴线位置来获得管子的位置。
The software can directly read the drawing file, and store the pipe size in the extended record and extended data, and retrieve the pipe position by the axis position.
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