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. |
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... described in [VD01], whose first part describes informally common operations on themes. Material on the modeling tools UML, OMT, and Rational Rose can be found in [Qua98, RBP+91]. Some database topics are neglected in this book. A first ...
... described. The last polyline in this figure is non-monotone. We shall often use the term line instead of polyline when there is no ambiguity. Extreme points (a) (b). /. \,. (e) W (f) Figure 2.1 Examples of one-dimensional objects: line ...
... described as a single pixel. Its location is described as the pixel address; that is, a pair of integer coordinates. A polyline, polygon, or region is represented by a finite number of pixels. In Figure 2.5, the following list of pixels ...
... described in material to follow. Vector Mode In vector mode, objects are constructed from points and edges as primitives. A point is represented by its pair of coordinates, whereas more complex linear and surfacic objects are ...
... described by an ordered list of pairs of coordinates, such as the following: < [4,4], [6, 1], [3,0], [0, 2], [2, 2] = Figure 2.7 shows examples of polylines using this vector representation. For the sake of simplicity, we use a slightly ...
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 |