Our findings highlight the importance and value of user-centered usability testing of a patient application implemented in "real-world" conditions. To achieve adoption and sustained use by patients, the app should meet patients' needs while also efficiently improving the quality of MedRec.
The first step of most database design methodologies consists in eliciting part of the user requirements from various sources such as user interviews and corporate documents. These requirements formalize into a conceptual schema of the application domain, that has proved to be difficult to validate, especially since the visual representation of the ER model has shown understandability limitations from the end-users standpoint. In contrast, we claim that prototypical user interfaces can be used as a two-way channel to efficiently express, capture and validate data requirements. Considering these interfaces as a possibly populated physical view on the database to be developed, reverse engineering techniques can be applied to derive their underlying conceptual schema. We present an interactive tool-supported approach to derive data requirements from user interfaces. This approach, based on an intensive user involvement, addresses a significant subset of data requirements, especially when combined with other requirement elicitation techniques.
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