In some scenarios, they reduce the amount of network IO because SQL statements can be executed in sequence at the database.

在某些场景中，它们可以减少网络IO的数量，因为sql语句可以在数据库依次执行。

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But first make sure you can establish a Derby Network Server connection to the DB1 database using ij, the Derby SQL scripting tool.

但是，首先要确保您可以使用ij这个Derby sql脚本编制工具，建立到DB 1数据库的Derby Net work Server连接。

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The Derby database embedded in Eclipse lets you create an SQL database on the client side with no security issues or network problems, such as an unstable connection or high latency.

嵌入到Eclipse中的Derby数据库使您可以在客户端创建SQL数据库而不会有任何安全问题或网络问题，例如连接不稳定或反应时间长。

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