当不同的应用程序服务器供应商预览这个规范时，他们发现这不是表示关系的最优方法。
When the specification was previewed by different application server vendors, they discovered that this wasn't an optimal way to represent relationships.
答：是的，WebSphere Application Server v 5支持资源提供者的只读特性，它还支持由XA规范定义的只读最优化。
Answer: Yes, WebSphere Application Server V5 supports the Read-Only feature for the resource providers that it also supports the Read-Only optimization defined by the XA specification.
假定约束是可行、规范的，对于目标函数为正定或半正定的情形，得到了全局最优解的充要条件。
Under the cases that the objective function is positive definite or positive semidefinite, the necessary and sufficient conditions to characterize global optimal solution are obtained.
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