The software testing technical terms - not only for ISTQB® Certified Tester Download PDF


Extent to which correct and complete goals are achieved. [Reference: ISO 9241] - See also: efficiency


The degree to which resources are expended in relation to results achieved.

emotional intelligenceUK

The ability, capacity, and skill to identify, assess, and manage the emotions of one's self, of others, and of groups.


A device, computer program, or system that accepts the same inputs and produces the same outputs as a given system. [Reference: ISO 24765]


The process of encoding information so that only authorized parties can retrieve the original information, usually by means of a specific decryption key or process.

end-to-end testingUK

A type of testing in which business processes are tested from start to finish under production-like circumstances.

endurance testingUK

1. Testing to determine the stability of a system under a significant load over a significant period of time within the system's operational context.

2. type of performance efficiencytesting conducted to evaluate whether a test item can sustain a required load continuously for a specified period of time

entry criteriaUK

The set of conditions for officially starting a defined task. [Reference: Gilb and Graham] - See also: exit criteria

environment modelUK

An abstraction of the real environment of a component or system including other components, processes, and environment conditions, in a real-time simulation. [Reference: Wallentowitz]