初始化演示数据库后，可以使用Apache Derby ij工具连接至测试数据库以及发出SQL命令。

After you've initialized a demo database, you can use the Apache Derby ij tool to connect to the test database and issue SQL commands.

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用这种方法返回一个备份后，记得在恢复后的队列管理器上发出一个REFRESH CLUSTER命令，以确保队列管理器拥有关于该集群的最新信息。

After reverting to a backup in this manner, remember to issue a REFRESH cluster command on the restored queue manager to ensure that it has up-to-date information about the cluster.

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在下载simplejson后，通过发出清单1内的这些命令来安装它。

After you download simplejson, install it by issuing the commands shown in Listing 1.

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