对于所有字段,使用的任何规则应在子句之外。
对于单个的、简单的问卷调查,您可以将每个问题的所有信息放到单个表的一个字段中。
For a single, simple, survey, you could probably place all of the information from each question into a field in a single table.
简言之,Jenabean至少要求bean作者指明哪个字段保存的值对于该类型的所有实例是惟一的。
To summarize, Jenabean at a minimum requires bean authors to indicate which field holds a value that is unique for all instances of that type.
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