| 摘要 |
PROBLEM TO BE SOLVED: To provide new definition of a digital item serving as a data manipulation unit for electronic commerce such as generation, process, transaction, transmission, management, storage and usage of multimedia data. SOLUTION: A failure of duplicate selection is dissolved by configuring a new digital item by using a selection group (CHOICE) and selection items (SELECTION) of the digital item. In addition, efficiency of a comparison operation and power of expression of conditions are enhanced by configuring a new digital item by using conditions to effectively select selection items. |
