A data model is independent of hardware or software constraints. Rather than try to. represent the data as a database would see it, the data model focuses on representing the. data as the user sees it in the real world.
International AIED Society. AIED is an interdisciplinary community at the frontiers of the fields of computer science, education and psychology. It promotes rigorous research and development of interactive and adaptive learning environments for learners of all ages, across all domains.
In computing, Dynamic Data Exchange (DDE) is a method of interprocess communication under Microsoft Windows or OS/2.It allows one program to subscribe to items made available by another program, for example a cell in a Microsoft Excel spreadsheet, and be notified whenever that item changes.DDE was partially superseded by Object Linking and Embedding (OLE), but remains used for simple interprocess communication tasks.t allows one program to subscribe to items made available by another program, for example a cell in a Microsoft Excel spreadsheet, and be notified whenever that item changes. DDE was partially superseded by Object Linking and Embedding (OLE), but remains used for simple interprocess communication tasks.