http://scitec.uwichill.edu.bb/cmp/online/cs22l/waterfall_model.htm

WHAT DOES VALIDATION/VALIDITY MEAN?

Validation is the test of validity. It consists of a process of testing the systems, devices or methods to show that they are suitable or not. Validity is the best approximation to the truth of a given proposition, inference, or conclusion. Measures, designs and samples do neo have validity. However, we can say that a measure produces valid conclusions.

http://www.socialresearchmethods.net/kb/introval.php

WHAT DOES SIGNIFICIANCE MEAN?

In English general mean of significance is important. However, in statistic –I think that this mean is important for us- significance is probably truth (not depend on chance).

http://www.surveysystem.com/signif.htm

WHAT DOES RELIABILITY MEAN?

Reliability is the probability of process that a system or a component will work without error until certain time t. And also, it is called as the consistency of measure. To say that a thing has reliability, the results we have should be approximately the same.

http://www.socialresearchmethods.net/kb/reliable.php

WHAT DOES RELEVANCE/RELEVANT MEAN?

Relevance is the relationship between the issues which are in given information or other things. And also, relevance consists of characteristics which are pertinent, connected and applicable. In other words, it is a measure of how closely a given object. According this points, also relevant is pertinent, connected and applicable.

http://en.wikipedia.org/wiki/Relevance

WHAT IS AN EVENT?

Event is the occurrence which happens at a certain time and place.

http://en.wikipedia.org/wiki/Event_chain_methodology

WHAT IS A PROCCESS?

Process is the chain of activities which are have the common aim. It can also be defined as a changes of properties sequentially when trying to reach the result. In process, the result of one event can be reason of other events.

http://en.wikipedia.org/wiki/Process

http://oeas.ucf.edu/process_analysis/what_is_pa.htm

WHAT IS A LIFE-CYCLE?

Life-cycle can be thought as a process which is from cradle to grave of products and services. It consists of whole period of a thing from the instant when it starts to instant when it ends.