The most frequent causes of death from Werner Syndrome are heart attacks and cancer. It is not uncommon for affected individuals to develop multiple, rare cancers during their lifetime. People with Werner syndrome usually live into their late 40's or early 50's.
1 Answer. I am not a business analyst (I'm a software developer) but wil hazard a semi-educated guess: A requirement is something that is desired and fills a business need while a constraint limits choices to fit within an existing space. For example, a requirement might be something like: As a user, I must be able to enter the lengths of two adjacent sides of a rectangle and then click a single button to obtain the perimeter of that rectangle..
The difference is that requirement is an analysis artifact. The specification is a design artifact. In a final as-built documentation, you will typically find the word specification, instead of requirement, since the requirements have been converted to specifications.equirements document what is needed-they shouldn't specify the how, but the what. Specifications document how to achieve the requirements-they should specify the how. In many places these documents are not separate and are used interchangeably.