时间标记在实体和元组级上，空间数据采用非拓扑数据模型。
Finally, the time is signed on entity and record, and non-topological data model is adopted to organize spatial data.
拓扑处理程序还提供了透视图和视图的数据模型，并将 Eclipse 活动关联到页面。
The topology handler also provides the data model for perspectives and views and associates Eclipse activities to the pages.
最后，数据模型还与拓扑处理程序连接起来，以将初始实例的值读取到数据模型中。
Last, the data model is coupled with the topology handler to read initial instance values into the data model.
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