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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... pair of (Cartesian) coordinates that, according to common use, we denote as x (the abscissa) and y (the ordinate). Although points in the Euclidean plane are quite useful to represent the location and shape of objects of the Earth's ...
... pairs of nonconsecutive edges intersect at any place. • A polyline is monotone with respect to a line C if every line C' orthogonal to C meets the polyline at one point at most. Figure 2.1 depicts one-dimensional objects, as previously ...
... pair of points A and B in P the segment AB is fully included in P. • A monotone polygon is a simple polygon such that its boundary 6P can be split into exactly two monotone polylines MC, and MC. The monotonicity is usually expressed ...
... pair (x, y) where x < N is the column of the cell in the grid, and y < M is the row. FIELD-BASED DATA IN TESSELLATION MODE In practice, a regular tessellation may be encountered in applications that process image data coming from remote ...
... 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 is a representation of polygon P. < 5, 12, 13, 14, 17, 18, 19, 20, 21, 22, 26, 27, 28 ...
Obsah
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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 |