TESTINGWORLD – Domains

 

The World of Professional Testing

 

 

DOMAINS

1. Basics of Software Testing

1.1. Why is Testing necessary ?

1.1.2. Causes of Software Defects

 

A human being can make an error (mistake), which produces a defect (fault, bug) in the code, in software or a system, or in a document. If a defect in code is executed, the system will fail to do what it should do (or do something it shouldn’t), causing a failure. Defects in software, systems or documents may result in failures, but not all defects do so.

Defects occur because human beings are fallible and because there is time pressure, complex code, complexity of infrastructure, changed technologies, and/or many system interactions.

Failures can be caused by environmental conditions as well: radiation, magnetism, electronic fields, and pollution can cause faults in firmware or influence the execution of software by changing hardware conditions.

 

(Courtesy of ISTQB)

 

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