N

N-Switch Coverage: The percentage of sequences of N-transitions that have been tested.

N-Switch Testing: A form of state transition testing in which test cases are designed to execute all valid sequences of N-transitions.

N-Transitions: A sequence of N+transitions.

N+1 Testing: A variation of regression testing. Testing conducted with multiple cycles in which errors found in test cycle N are resolved and the solution is retested in test cycle N+1. The cycles are typically repeated until the solution reaches a steady state and there are no errors. See also Regression Testing.

Natural Language Processing (NLP): A computer system to analyze, understand and generate natural human languages.

Negative Testing: Testing a system or application using negative data. (For example testing a password field that requires a minimum of 9 characters by entering a password of 6).

Non-Functional Requirements Testing: Testing of those requirements that do not relate to functionality. i.e. performance, usability, etc.

Normalization: A technique for designing relational database tables to minimize duplication of information and, in so doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies.