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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Výsledky 6-10 z 67
... points of the embedding space sharing several common properties (i.e., having the same description). In order to distinguish an object from others, an explicit identity is assigned to it. The entire set (identity, spatial object, and ...
... set of line segments or edges, such that each segment endpoint (called a vertex) is shared by exactly two segments, except for two endpoints (called the extreme points), which belong to only one segment. We shall occasionally consider ...
... collection of entities. Many factors may influence this choice, an important one being the scale of interest for the ... set of points (region, line) as an entity or object. The concept of object is not relevant in the field-based ...
... set of cells that cover the city's interior, whereas in the vector mode it will be represented as a list of points describing the boundary of a polygon. Tessellation A cellular decomposition of the plane (usually, a grid) serves as a ...
... set of points P, partitioning into Thiessen polygons associates with each pe P a polygon that is the set of points whose closest point in P is p. The resulting partitioning is also called a Voronoi diagram. 4. An A4 formatted image ...
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 |