Spatial Databases: With Application to GIS
Výsledky 1-5 z 64
... 7.2.1 External Sort/Merge 271 7.2.2 Distribution Sweeping (Rectangle Intersection) 274 Spatial Join 279 7.3.1 z-Ordering Spatial Join 280 7.3.2 Joining ...
... runs 273 The merge phase 273 Distribution sweeping 276 External rectangle ... 287 Alternatives for spatial hashing 289 Illustration of spatial join 291 ...
They rely on operations from the relational algebra, such as projection, selection, join, and union. THEME PROJECTION Theme projection with signature theme ...
If ><g denotes a spatial join, and T and T5 are themes, then the overlay is expressed as T. B-1G T3. Figure 1.6 gives an example of the overlay of Countries ...
Finally, some of the most important achievements in the field of relational query processing, such as join algorithms, cannot be used in geospatial ...
Co říkají ostatní - Napsat recenzi
CHAPTER 7 QUERY PROCESSING
CHAPTER 8 COMMERCIAL SYSTEMS
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