Spatial Data Transfer in the Case of Update
نویسنده
چکیده
More and more often people exchange geospatial information. This happens when a user gets data from producer. For a transfer of updated data a producer provides a new geographical dataset to users. Nowadays, this update transfer is usually a bulk transfer. Hence, transferred data describes a snapshot of the world. Successive changes undergone by features are not described. To improve the integration process, these modifications should be isolated in the transferred dataset. We study how metadata could be used to represent change in a bulk data transfer. We propose to use information about dating and lineage to detect altered features. Then, only these altered features are integrated in the user information system. For a bulk data transfer, this metadata improve the integration process. Moreover, we extend the use of metadata. It is used during the data transfer and it is not limited to a document role.
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تاریخ انتشار 2003