The watermarking relational databases have wide foreground and real application value for the database's security.
水印关系数据库对数据库的安全有着广阔前景和实际应用价值。
The purpose behind each software stack is the application level: the applications are the real value in the software stack.
每个软件堆栈的最终目的都与应用程序有关：应用程序是软件堆栈的真正价值所在。
Practical application: Give away a free sample or freebie - anything for free. Make sure it is something of real value.
实际运用：发放免费试用装或代金券——任何免费的东西都可以，但一定要是有实际价值的东西。
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