Structure and Semantics   

Generalized icons

  • icon -- images
  • earcon -- audios
  • ticon -- text
  • micon -- motions
  • vicon -- vedios
  • multicon -- composite multimedia objects

    • (xm, xi)

    xm -- logical part -- semantics

    xi -- physical part -- structure

    Relational Multimedia Database

    R(f1 : F1Type, f2 : F2Type, ... , fn : FnType)