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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... performed while using a GIS. System architecture alternatives to support such operations are discussed in Section 1.4. Section 1.5 covers the requirements of a spatial DBMS. Finally, Section 1.6 provides bibliographic notes in the ...
... performing the union of sets of geographic objects having the same schema. It is similar to the relational union. Hence if T and T2 are two theme instances, the result is denoted Ti U T3. Figure 1.5 depicts the union of two themes ...
... perform the following on geospatial and alphanumeric data: • Input and store • Retrieve and analyze • Display and select A GIS needs to store (in files) both spatial and alphanumeric data. Storage can be controlled either directly by ...
... performed via SQL. Consider the query Return the contours of France. Solving this query implies getting the set of coordinates of the vertices that correspond to the polygons approximating the boundaries of France; that is, getting the ...
... performed. This chapter is organized as follows. Section 2.1 describes entitybased models and field-based models as the main approaches in geographic space modeling. In Section 2.2, we present three representation modes commonly used to ...
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 |