但是，在处理更复杂的应用程序时，同样的系统开销看上去则成为合理的支出。
But that same overhead should seem like a well-spent expense when dealing with more complicated applications.
数据库系统会成为软件中复杂的部分，特别是在规模扩大到支持企业级应用程序的时候。
Database systems can be complex pieces of software, especially when they scale to support enterprise-level applications.
在20世纪70年代，DBMSs取得了巨大进展，能够帮助公司收集、重用和报告数据，并管理大型、复杂、然而妥善协调的应用程序系统。
The DBMSs of the 1970s represented powerful advances in the ability of companies to collect, reuse, and report on data, and to manage large and complex, yet well-coordinated application systems.
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