最少知识原则(Least Knowledge Principle),或者称迪米特法则(Law of Demeter),是一种面向对象程序设计的指导原则,它描述了一种保持代码松耦合的策略.其可简单的归纳为: Each unit should have only limited knowledge about other units: only units "closely" related to the current unit. 每个单元对其他单元只拥有有限的知识,只了解与当前单元紧密…
使用aum( Automatic Undo Management) 时遇到 ORA-01555错误--- 原因和解决方式. 參考原文: ORA-01555 Using Automatic Undo Management - Causes and Solutions (Doc ID 269814.1) 适用于: Oracle Database - Enterprise Edition - Version 9.0.1.0 and later Information in this document…
北风设计模式课程---最少知识原则(Least Knowledge Principle) 一.总结 一句话总结: 最少知识原则(Least Knowledge Principle),或者称迪米特法则(Law of Demeter):只和自己直接的 "朋友" 交谈. 1.最少知识原则 的好处是什么? 更好的信息隐藏:It leads to better information hiding. 更少的信息重载:It leads to less information overload. 2…
终端风险管理使大额交易联机授权,并确保芯片交易能够周期性地进行联机以防止在脱机环境中也许无法察觉的风险. 虽然发卡行被强制要求在应用交互特征(AIP)中将终端风险管理位设置成1以触发终端风险管理,但终端应该执行终端风险管理而不必考虑卡片的设置情况. Terminal risk management is that portion of risk management performed by the terminal to protect the acquirer, issuer, and sy…