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。

youdao

These additions are usually done to solve network access problems that due to time, cost, or manpower issues IT might not be able to easily solve.

FORBES: Your WiFi is (Possibly) No Longer Secure!

Some iPhone users have seen intermittent problems with making calls or sending texts, apparently caused by their phones continually "talking" to the network.

BBC: Apple on update issue - no comment