Validating user interface in
You should read this document to learn how to implement user interface item validation and how to extend the user interface validation protocol.Data entry refers to user actions involving input of data to a computer, and computer responses to such inputs.When performed appropriately, summative usability testing, which FDA considers as a form of design validation, quickly reveals whether a manufacturer has effectively addressed users' needs through the application of established human factors processes and principles.Typically, such testing calls for representative users (e.g., physicians, nurses, therapists, or technicians) to perform frequent, urgent, and critical tasks with the given device, without assistance and possibly without prior training.Data validation rules constitute the constraints that data input and processing must adhere to in addition to the structural constraints imposed by a data model.
To start, we create a text field and bring up the properties dialog for the field.
Then we select the “Validate” tab to see the validation options: The default is that the field will not get validated.
For numeric fields, there is a convenient way to validate a value range, but we want to select to run a custom validation script.
Such control entries are discussed in Section 3 of these guidelines.
Data can be entered into a computer in a variety of different ways.
For example, a nurse serving as a test participant might prepare a generally familiar but new hemodialysis machine as if it were to be used on an actual patient.