In study of xml data model , we investigate the semi - structure charasteristics of xml : selfdescribe , graph - based model and irregular then the compedson and analysis of normal tree - structure model and node labeled direct graph are presented 對xml的數(shù)據(jù)模型,我們研究了xml的半結構化特性:自描述、圖結構和不規(guī)則。然后對比分析了xml常見的樹結構模型和圖結構模型對xml查詢基本操作的影響。
Making study of data model , first we investigate xml data model and semi - structure data model . and to research the semi - structure characteristics of xml : self - describe , graph - based model and irregular . then the analysis of normal tree - structure model is presented 在對數(shù)據(jù)模型的研究中,首先介紹了xml數(shù)據(jù)模型和半結構化的數(shù)據(jù)模型,研究了xml的半結構化特征:自描述、圖結構和不規(guī)則,并分析了xml常見的樹結構模型。