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 80
... contains geographic objects such as land parcels, rivers, and roads that are related to the same geographic area ... contain certain objects or patterns. Location, direction, and size of the object are usually of little importance—a ...
... containing one row or tuple per country and one column or attribute per property represented in each country (namely, its name, capital, and population). In order to design a relational schema—that is, the set of tables necessary to ...
... contains a given point. • Clipping Clipping extracts the portion of a theme located within a given area (Figure 1.8). As opposed to windowing, the geometry of an object in the result corresponds exactly to the intersection of the ...
... contains the relevant objects. This region is bounded, and for the sake of convenience we assume that it is a sufficiently large rectangle whose edges are parallel to the axes of the coordinate system. We call it the embedding space in ...
... contains it. A point is 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 ...
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 |