Conceptual modeling of databases is a complex cognitive activity, particularly for novice database designers. The current research empirically tests a new pedagogy for this activity. It examines an instructional approach that stresses visualizing gradual transitions between levels of abstraction in different hierarchic levels of a relational…

Discusses data model role in an office filing facility, office data model requirements, and various modelling paradigms for office data modelling. Data model application to a typical collection of office data is presented, filing and retrieval operations are illustrated, and proposed research into other office data modelling aspects is outlined.…

Examines different approaches to prosodic acquisition: Gerken's S(W) production template; Fikkert's and Archibald's theories of stress acquisition and Demuth and Fee's prosodic hierarchy account. Results reveal that current approaches cannot account for findings in the data such as the increased preservation of final over nonfinal unstressed…