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 by a set of descriptive attributes. For instance, the name and population of a city constitute its description. These are also referred to as alphanumeric attributes. Europe Figure 1.2 A typical map. • A spatial component,. 1 ...
... described by the same collection of attributes, which constitute its schema: name, population, and geometry. A theme has to be represented according to the GIS logical data model (step 2 of Section 1.1.2). This model is here called a ...
... described can be expressed as a 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 ...
... described belong to what might be considered theme algebra. Each operation takes one or more themes as input and returns a theme. However, not all operations on themes give as a result a theme. For instance, some operations based on ...
... described, DBMS extensibility has been receiving a growing interest in the past years in many new application domains. The basic concept is the ability to add new types and operations to a relational system. In the case of geospatial ...
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 |
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Spatial Databases: With Application to GIS Philippe Rigaux,Michel Scholl,Agnès Voisard Omezený náhled - 2002 |