如果说一个应用程序可扩展，就是说应用程序可以增长空间来应对更多用户负载。
If an application is said to scale, then the application can be grown to handle the load of more users.
此外，如果很多用户都使用同一条线路，流量将会很高并且在线路内也减少空间，结果是对所有用户的响应时间都会变慢。
In addition, if many users are using the same line, the traffic will be high and no space is available in the line, which results in slower response time for all the users.
尽管DB2的空间功能出现已经将近十年了，但是很多用户并不了解它。
Although spatial capabilities with DB2 have been available for close to 10 years, not many users know about it.
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