读事务需要数据的一致视图 —— 即当同时提交两个读事务时，如果它们选择相同的数据范围，那么应该产生一致的结果集。
Read transactions require a consistent view of the data -- meaning if two read transactions are submitted at the same time, they should produce uniform result sets if they select the same data ranges.
这是清晰划分模型(数据以及对数据的操作，如提交给服务器)和视图的一部分。
That's part of the clean separation between the model (the data and the operation on the data, such as submitting it to a server) and the view.
访问 jazz.net 上的 Rational Requirements Composer 专题，好查看迭代计划以得到下一个版本和视图，或者提交特性请求和漏洞报告。
Visit Rational Requirements Composer on jazz.net to view iteration plans for the next release and view or submit feature requests and bug reports.
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