【摘要】 引入超图模型的部分理论 ,建立了基于基态修正的面向对象时空数据模型 ,很好地解决了时空对象的空间关系和时空对象之间的关系。提出了时空对象的索引结构 ,并引入基态距因子和等比系数 ,从而大大提高了查询效率 ,并缩短了查询时间。更多还原

【Abstract】 An obiect-oriented spatio-temporal data model based on base state with amendments is built after introducing part of hypermap theory.It can solve the problem of the relations between spatio-temporal data model and introduced the factor of base state interval ang parameter of geometric proportion.Thus,the efficiency of query was improved and the query time decreased.更多还原