If your database contains sensitive data, you might want to limit access to the catalog views, because the catalog describes every object in the database.
如果你的数据库包含敏感信息，您可能希望限制对编目视图的访问，因为编目描述了数据库中的每一个对象。
2
However, the expectations criterion is not sensitive to the risk. and is not suitable for the optimal problems which need to reflect or limit the risk directly.
然而，期望准则对风险是不敏感的，不适宜需要直接对风险有所反映或限制的优化问题。
3
If no clear right, no strictly constraint on inner-budget and weak responsibility on the risk of exceed the time limit, it will reflect the interest rate not so sensitive.