可以通过查询钻取特性收集关于系统上执行的每个sql语句的统计信息并分析语句历史。
Query drill down allows you to gather statistical information about each SQL statement executed on the system and analyze statement history.
并不是每个包装器都能够收集上面列出的所有统计信息，因为数据源统计信息与其在联邦系统上的对等物之间可能不存在映射。
Not every wrapper may be able to collect all the statistics listed above, because a correct mapping between the data source statistic and its counterpart on the federated system may not exist.
接下来，收集统计信息，这样系统表中会出现一些数据。
Next, collect statistics so that the system tables will be populated.
数据模型中的关键元素是一组统计信息，该统计信息收集了有关数据库中所包含的数据和系统目录表中所存储的数据的信息。
A key element in the data model is the set of statistics gathered about the data contained in the database and stored in the system catalog tables.
联邦系统在创建昵称时收集关系昵称（和一些非关系昵称）的统计信息。
The federated system collects statistics for relational nicknames (and some non-relational nicknames) during nickname creation.
它提供了有关JVM的详细信息，包括总的运行时间、线程信息、装载的类、内存统计信息、垃圾收集和操作系统信息。
It provides detailed information about the JVM, including total uptime, threading information, classes loaded, memory statistics, garbage collection, and operating-system information.
在风险分析的信息系统，它是非常困难的，有效的风险进行量化，只有收集和统计数据，因为大量的风险因素是非常模糊的。
In the risk analysis of information system, it's very difficult to effectively quantify the risk with only collecting and counting data because lots of risk factors are very fuzzy.
在风险分析的信息系统，它是非常困难的，有效的风险进行量化，只有收集和统计数据，因为大量的风险因素是非常模糊的。
In the risk analysis of information system, it's very difficult to effectively quantify the risk with only collecting and counting data because lots of risk factors are very fuzzy.
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