An Update Number is used to identify a particular version of a message.

更新号用来标识消息的特定版本。

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The version number is important because it describes to the Update Manager the lowest acceptable version number that should exist on the client.

版本号是很重要的，因为它向Update Manager描述了客户机上应有的最低可接受版本号。

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Use UPDATE STATISTICS LOW if the number of rows has changed significantly or after migration from previous version of database server.

如果被更改的行数很多，或者刚在不同版本的数据库服务器之间完成迁移，则应使用 UPDATE STATISTICS LOW。

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Every significant update of Windows or new version showed a decrease in the number of infections per thousand machines, said Mr Evans.

BBC: Video gamers face malware deluge