Federated object registration: a wrapper encapsulates the data source characteristics from the federated engine.

联邦对象注册：包装器封装了来自联邦引擎的数据源特征。

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Every database engine has its own characteristics and usually there is a need for a platform specific SQL tuning.

每个数据库引起都有自己的特点，通常需要针对平台进行专门的SQL优化。

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Given the use and characteristics of the tables in the messaging engine database, only the SIBnnn tables are likely candidates for reclamation — sorry, maintenance.

给定消息引擎数据库中的表的使用情况和特征，只有sibnnn表有可能是要进行改造——对不起，应该是维护——的候选表。

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For instance, the Audi A8 not only has a 372 horsepower engine that provides exhilarating driving characteristics, but it also has an aluminum space frame that lowers vehicle weight considerably versus a steel chassis.

FORBES: Growing Audi Across the Atlantic