多媒介数据的表示与操作

来源期刊：中南大学学报(自然科学版)1990年第4期

论文作者：潘久辉

文章页码：434 - 440

关键词：模型化； 数据库； 信息系统； 图象处理

Key words：modelling； database； information system； image processing

摘    要：基于对多媒介对象与传统格式化数据本质差别的分析,本文提出一个面向对象的多媒介数据模型。通过在经典的面向对象模式的基础上进一步引进“版本”作为一种新的抽象形式,可以使用一组统一的抽象来并存地表示同一对象的多种概念结构。由于抽象数据类型的使用,可获得媒介的独立性,从而可提供一组施于各种类型对象上的统一操作。

Abstract: Based on the investigation into the essential differences between multimedia objects and tradi-tional formatted data,an object-oriented model for mutimedia objects is proposed in this paper.Through the introduction of version as a new form of abstraction in addition to those in theclassical paradigm,we are able to convey various conceptual structures of the same object imul-taneously using a set of uniform abstractions.By means of Abstract Data types,the media inde-pendence is reached and it becomes possible to provide the uniform operations on diverse types ofobjects.