A wrapper module can execute within the DB2 engine, which is referred to as the trusted mode.
包装器模块可以在DB2引擎内执行，这被称为受信任(trusted)模式。
In general, the trusted mode provides better performance if the federated database is not partitioned.
通常，如果联邦数据库不是分区的，受信任模式可以提供更好的性能。
However, users running 32-bit wrappers in trusted mode in prior releases will need to run them in fenced mode in V9, and this change alone can have considerable performance impact.
然而，在之前版本中以受信任方式运行32位包装器的用户，在v9中现在需要以隔离方式运行它们，这种变化本身就会导致可观的性能影响。
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