spatial database design management (7 Ergebnisse)

Zustand: New. pp. vi + 312 Illus., Map.

Contents Foreword 1 Object Modelling and Geodatabases 2 How Maps inform 3 Smart features 4 Managing work flow with versions 5 Geodatabase design guide 6 GIS Data representations 7 The Structures of geographic data 8 The Shape of features 9 Linear modeling with networks 10 Cell-based modeling with rasters 11 Surface modeling with TINs 12 Finding Locations Bibliography IndexA spatial database is a database that is optimized to store and query data related to objects in space including points lines and polygons While typical databases can understand various numeric and character types of data additional functionality needs to be added for databases to process spatial data types These are typically called geometry or feature The open geospatial consortium created the simple features specification and sets standards for adding spatial functionality to database systems OGC Homepage Database systems use indexes to quickly look up values and the way that most databases index data is not optimal for spatial queries Instead spatial databases use a spatial index to speed up database operationsInaddition to typical SQL queries such as SELECT statements spatial databases can perform wide variety of spatial operations The following query types and many more are supported by the Open Geospatial Consortium1 Spatial Measurements Finds the distance between points polygon area etc2 Spatial Functions Modify existing features to create new ones for example by providing a buffer around them interesting features etc3 Spatial Predicates Allows truefalse queries such as is there a residence located within a mile of the area we are planning to build the landfill4 Constructor Functions Creates new features with an SQL query specifying the vertices points of nodes which can make up lines If the first and last vertex of a line is identical the feature can also be of the type polygon a closed line5 Observer Functions Queries which return specific information about a feature such as the location of the center of a circleThis book will be of immense help to all those contemplating to acquire expert knowledge of Spatial Database Design 312 pp.

Zustand: Good. Item in good condition and has highlighting/writing on text. Used texts may not contain supplemental items such as CDs, info-trac etc.

Zustand: New. In.

Zustand: New. In.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - The decision to write this book was motivated by a number of factors. First, although several useful textbooks on spatial databases have recently been published, this is an area of spatial information science that has lagged somewhat behind the rapid advances of the technology and the profusion of books on domain-specific applications. Second, much of the information pertaining to spatial database technologies is only available in scattered journal papers and conference proceedings, and prior to this book no single effort has been made to sift through this expansive literature and unite the key contributions in a single volume. The tasks of sourcing and coherently integrating relevant contributions is daunting for students, many of whom have a substantial number of competing demands placed on them. This book should make the task of knowledge building less daunting. Third, and perhaps most importantly, an apparent trend in many spatial information science programs is to focus, from first or second year undergraduate through to fourth year courses, on learning to work confidently and independently with increasingly complex software tools. Hence, many courses are technical in nature, and while they continue to produce technically adept students, knowledge of the broader aspects of spatial databases is often not as complete as it might be among graduates. Some programs have sought to address this by introducing courses that focus on spatial data management. However, these courses are largely unsupported by a relevant and contemporary textbook.

Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - The decision to write this book was motivated by a number of factors. First, although several useful textbooks on spatial databases have recently been published, this is an area of spatial information science that has lagged somewhat behind the rapid advances of the technology and the profusion of books on domain-specific applications. Second, much of the information pertaining to spatial database technologies is only available in scattered journal papers and conference proceedings, and prior to this book no single effort has been made to sift through this expansive literature and unite the key contributions in a single volume. The tasks of sourcing and coherently integrating relevant contributions is daunting for students, many of whom have a substantial number of competing demands placed on them. This book should make the task of knowledge building less daunting. Third, and perhaps most importantly, an apparent trend in many spatial information science programs is to focus, from first or second year undergraduate through to fourth year courses, on learning to work confidently and independently with increasingly complex software tools. Hence, many courses are technical in nature, and while they continue to produce technically adept students, knowledge of the broader aspects of spatial databases is often not as complete as it might be among graduates. Some programs have sought to address this by introducing courses that focus on spatial data management. However, these courses are largely unsupported by a relevant and contemporary textbook.