Spatial Databases: With Application to GISElsevier, 30. 5. 2001 - Počet stran: 410 Spatial Databases is the first unified, in-depth treatment of special techniques for dealing with spatial data, particularly in the field of geographic information systems (GIS). This book surveys various techniques, such as spatial data models, algorithms, and indexing methods, developed to address specific features of spatial data that are not adequately handled by mainstream DBMS technology. The book also reviews commercial solutions to geographic data handling: ArcInfo, ArcView, and Smallworld GISs; and two extensions to the relational model, PostgreSQL and Oracle Spatial. The authors examine these underlying GIS technologies, assess their strengths and weaknesses, and consider specific uses for which each product is best suited. |
Vyhledávání v knize
Výsledky 1-5 z 63
... 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 Two R-Trees 284 7.3.3 Spatial Hash Join 288 Complex Queries 292 7.4.1 Query Execution Plans 292 7.4.2 ...
... spatial hashing 289 Illustration of spatial join 291 Evaluation of queries 292 Logical and physical trees for query SPAT-ADM-LU1 294 Filter and refinement steps 297 Sequencing of row accesses 298 Two-way spatial joins 300 A 2-way join ...
... join algorithms. • Query optimization. Because the user query is purely declarative (at least with SQL), it is the responsibility of the system to find an acceptably efficient way to evaluate a query. • Concurrency and recovery. The ...
... spatial attribute geo. This is summarized in the following two-theme schema ... join, and union. THEME PROJECTION Theme projection with signature theme X ... spatial part is unchanged. If geo denotes the spatial type, and T denotes an ...
... spatial join. An object of one theme is joined with an object of the other theme if their geometries intersect. The resulting object has the descriptive attributes of both participating objects, and its geometry is the intersection of ...
Obsah
1 | |
29 | |
CHAPTER 3 LOGICAL MODELS AND QUERY LANGUAGES | 69 |
CHAPTER 4 THE CONSTRAINT DATA MODEL | 113 |
CHAPTER 5 COMPUTATIONAL GEOMETRY | 149 |
CHAPTER 6 SPATIAL ACCESS METHODS | 201 |
CHAPTER 7 QUERY PROCESSING | 267 |
CHAPTER 8 COMMERCIAL SYSTEMS | 311 |
BIBLIOGRAPHY | 373 |
INDEX | 395 |
ABOUT THE AUTHORS | 409 |
Další vydání - Zobrazit všechny
Spatial Databases: With Application to GIS Philippe Rigaux,Michel Scholl,Agnès Voisard Omezený náhled - 2002 |