The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008
4. CONCLUSION
Combined with characters of native XML database and GML
spatial data, this paper proposed native XML database based
GML storage model G2NXDBM, on the basis of this model,
this paper designs and develops G2NXDBMs prototype system
consisted of three parts: schema mapper, document storager,
and spatial analyser. The experimentation use GML data
describe city to testify rationality of prototype system, the
conclusion indicates that this system can effectively store and
query GML data.
Limited to content and time, the storage model G2NXDBM
proposed by this paper does not refer to a series of operation,
such as GML data insert, delete, and update, these problems are
needed to be studied further and resolved. In addition, native
XML database based GML native database should contain
content on aspects of storage, index, retrieve, concurrency,
security, integrality and so on. Thus, this paper would consider
factors of storage, index, retrieve, concurrency, security,
integrality in future, and gradually implement native GML
database.
ACKNOWLEDGEMENTS
This work was sponsored by the National Natural Science
Foundation of China (Research on the Storage and Index
Mechanism of GML Spatial Data, No. 040401045) and 863
Project of National Science and Technology ministry of China
(Research on GML-GIS and its implementation schema of
application, No.2006AA12Z221)
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