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 6-10 z 95
... representation. It studies the internal or physical representation of spatial objects. • Chapter 3 presents logical models and query languages for representing and manipulating geographic information. Our discourse relies on common ...
... representation of data independently of the actual Physical storage, and the DBMS is in charge of translating the user's manipulations into efficient operations on physical data structures. Note that this is quite different from file ...
... representation proposed to the user, and the external level corresponds to a partial view of the database provided in a particular application. The distinction between physical and logical representations, made throughout this book, is ...
... REPRESENTATION IN A RELATIONAL DATABASE In a relational environment, data representation is fairly simple. It relies on a single type of structure, the table or relation. For instance, to represent the name, capital, and population of a ...
... representation of themes by relations (tables). A geographic object is one tuple (row) of such a relation. Each column is an attribute. * Attributes that have alphanumeric types (e.g., string and real). * SQL-based querying. Figure 1.10 ...
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 |