The choice, then, is between better performance of an arbitrary key and easier maintenance of an operational key.

那么，选择就在任意键的更好性能和操作键的更易维护之间进行。

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Most of the time you can take advantage of any order that makes the SQL more readable and easier to maintain without affecting performance.

大部分时间，您可以利用使SQL更具可读性、更容易维护、且不会影响性能的任何顺序。

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Using Kylix 3 and DataSnap to build distributed applications based on data from the DB2 UDB databases offer greater security, performance, and easier maintenance.

通过使用Kylix 3和DataSnap来构建基于来自DB 2 UDB数据库中的数据的分布式应用程序，可以提供更大的安全性和更好的性能，同时也更易于维护。

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Enphase Energy has made a mark in the world of solar by developing small scale inverters called microinverters that make installation easier and improve the performance of rooftop solar panels.

FORBES: Solar Microinverter Maker Enphase Gets A Boost In Distribution Deal With Siemens

If it gets the money, the John Innes Centre hopes to build new greenhouses and invest in various imaging devices to make it easier to measure plant performance in the field.

BBC: Budget boost for science in the east

Through the easy-to-use, one-touch pairing procedure, The Original makes connecting to Bluetooth devices easier than ever, while at the same time providing unmatched wireless sound performance and design.

ENGADGET: Croon Audio's Original Bluetooth speakers promise not to creak while they're cranked