" "Building the right thing" refers back to the user's needs, while "building it right" checks that the specifications are correctly implemented by the system.In some contexts, it is required to have written requirements for both as well as formal procedures or protocols for determining compliance.It is a process of establishing evidence that provides a high degree of assurance that a product, service, or system accomplishes its intended requirements.This often involves acceptance of fitness for purpose with end users and other product stakeholders. It is sometimes said that validation can be expressed by the query "Are you building the right thing?"Independent verification and validation" can be abbreviated as "IV&V".
This can happen when, say, a product is built as per the specifications but the specifications themselves fail to address the user's needs.
I want to check what the user is writing in a textbox before I save it in a database. I guess I can always write some ifs or some try-catch blocks, but I was wondering if there's a better method.
I've read something about Validating Events, but I am not sure how can I use them. Validating Event When you change the focus by using the keyboard (TAB, SHIFT TAB, and so on), by calling the Select or Select Next Control methods, or by setting the Container Control.
Verification can be in development, scale-up, or production. Validation is intended to ensure a product, service, or system (or portion thereof, or set thereof) results in a product, service, or system (or portion thereof, or set thereof) that meets the operational needs of the user.
For a new development flow or verification flow, validation procedures may involve modeling either flow and using simulations to predict faults or gaps that might lead to invalid or incomplete verification or development of a product, service, or system (or portion thereof, or set thereof).