计算子专业英语第四八章.ppt

Ⅲ. ?Write true or false for the following statements according to the passage. 1. ?Testing in other means is equal to debugging. ( ) 2. ?The different levels are distinguished by the scope of the items under test . ( ) Ⅳ. ?Translate the following sentences from English into Chinese. 1. ?Software bugs will almost always exist in any software module with moderate size: not because programmers are careless or irresponsible, but because the complexity of software is generally intractable—and humans have only limited ability to manage complexity. 2. Unlike most physical systems, most of the defects in software are design errors, not manufacturing defects. Tips Some examples of test levels (from ISO 12207) for new development are: ? ?Each software unit and database; ? ?Integrated units and components; ? ?Tests for each software requirement; ? ?Software qualification testing for all requirement; ? ?System integration: aggregates of other software configuration items, hardware, manual operations and other systems; ? ?System qualification testing for system requirements. Reading Material Creating Visual Basic COMponents for ASP There are two kinds of programming. Programming with reusable code and non reusable code. To achieve reusable code you can write functions and procedures. In ASP scripts you can write functions and procedures and call them as often you want. But the main drawback with ASP script is you can not hide your code from the buyer. This is applicable when you are writing some commercial applications and sell it. Your buyer can tweak the code and even resell it as it is his own. When you want to avoid this, here comes the concept of VB COM. ActiveX DLLs ActiveX DLLs are COMponents where you can hide your code,call it in your ASP and distribute with your application. In this article we shall discuss how to wr