在运用面向对象分析与设计方法进行系统开发时，快速原型是一种较理想的系统开发策略。
When we develop systems by using object-oriented approach, rapid prototype is an ideal system development strategy.
优化的性能：为联邦系统开发的应用程序可以取得强大的性能，并且不需要实施特殊的策略来计算查询。
Optimized performance: the power of applications developed for the federated system to achieve strong performance without the need to implement special strategies to evaluate the queries.
PAM 为数据库和系统开发人员提供了很大的灵活性以及对身份验证策略的控制能力。
PAM offers database and system developers a great deal of flexibility and control over authentication policies.
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