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Beginning Spatial with SQL Server 2008

:	Alastair Aitchison
:	Beginning Spatial with SQL Server 2008
:	Apress
:	9781430218302
:	1
:	CHF 46,90
:

:	Allgemeines, Lexika
:	English

:	456
:	Wasserzeichen/DRM
:	PC/MAC/eReader/Tablet
:	PDF

Microsoft SQL Server 2008 introduces new geography and geometry spatial datatypes that enable the storage of structured data describing the shape and position of objects in space. This is an interesting and exciting new feature, with many potentially useful applications.

Begin ing Spatial with SQL Server 2008 covers everything you need to know to begin using these new spatial datatypes, and explains how to apply them in practical situations involving the spatial relationships of people, places, and things on the earth.

All of the spatial concepts introduced are explained from the ground up, so you need not have any previous knowledge of working with spatial data.
Every section is illustrated with code examples that you can use directly in SQL Server.
All of the topics covered in this book apply to all versions of SQL Server 2008, including the freely available SQL Server 2008 Express.

Alastair Aitchison has more than eight years of experience as a management information consultant, specializing in the design and deployment of online reporting systems. For the last three years, he has been employed as a reporting and analysis manager at Aviva, the world's fifth largest insurance group. In this role, he has championed the use of spatial data in corporate applications including the geographic analysis of risk patterns, plotting the success of regional marketing campaigns, and understanding the impact of major weather incidents. Alastair is a Microsoft Office Specialist Master Instructor and has delivered numerous training courses to individuals and small groups on a range of software packages.

	Contents at a Glance	5
	Contents	7
	About the Author	20
	About the Technical Reviewer	21
	Acknowledgments	22
	Introduction	23
	Who This Book Is For	24
	How This Book Is Structured	24
	Prerequisites	25
	Downloading the Code	25
	Contacting the Author	25
	Defining Spatial Information	27
	What Is Spatial Data?	27
	Uses of Spatial Data	27
	Representing Features on the Earth	28
	Describing Positions Using a Coordinate System	35
	Applying Coordinate Systems to the Earth	38
	Using Spatial Reference Systems	48
	Spatial Reference Identifiers	49
	Spatial References in SQL Server 2008	49
	Comparing Spatial Reference Systems	52
	Summary	55
	Implementing Spatial Data in SQL Server 2008	56
	Understanding Datatypes	56
	Comparing Spatial Datatypes	57
	The geography Datatype	58
	The geometry Datatype	63
	Choosing the Right Spatial Datatype	67
	How Spatial Data Is Stored	73
	Converting Between Datatypes	74
	Spatially Enabling Your Tables	75
	Summary	77
	Working with Spatial Data in the . NET Framework	78
	What Is the . NET Framework?	78
	How . NET Is Hosted	79
	Why Use . NET for Spatial Functionality?	81
	Applying Principles of Object Orientation	83
	Instantiating Spatial Objects	87
	Invoking Spatial Instance Methods	89
	Accessing Properties	91
	Combining T-SQL and . NET CLR Methods	92
	Using Open Geospatial Consortium Methods	93
	Handling Exceptions in the CLR	93
	Summary	96
	Creating Spatial Data Objects	99
	Choosing an Appropriate Static Method	99
	Creating Geometries from Well- Known Text	101
	Creating Geometries from Well- Known Binary	113
	Creating Geometries from Geography Markup Language	125
	Summary	135
	Marking Out Geometries Using Virtual Earth	136
	Creating the Web Application	137
	Using the Web Application	151
	Creating a Geometry from the WKT Output	153
	Summary	155
	Importing Spatial Data	157
	Sources of Spatial Data	157
	Importing Tabular Spatial Data	158
	Importing Data from Keyhole Markup Language	164
	Importing Data from ESRI Shapefile Format	168
	Using Third- Party Conversion Tools	174
	Summary	175
	Geocoding	176
	What Is Geocoding?	176
	MapPoint Web Service	177
	Creating the . NET Assembly	179
	Compiling the Assembly	189
	Configuring the Database	190
	Importing the Assembly	191
	Creating the Function	192
	Using the Geocode Function	193
	Summary	196
	Syndicating Spatial Data	198
	Why Syndicate Spatial Information?	198
	Syndication Formats	199
	The GeoRSS Format	201
	Attaching Spatial Information to a Feed	204
	Creating a GeoRSS Feed	205
	Serving the GeoRSS Feed	212
	Testing the Feed Handler	215
	Consuming the GeoRSS Feed	216
	Summary	223
	Presenting Spatial Data Using Web Mapping Services	224
	The Application	224
	Process Overview	225
	Obtaining the Source Data	228
	Creating a New Web Site Project	229
	Creating the HTML Page	229
	Creating the Static JavaScript	232
	Creating the Stored Procedure	245
	Creating the Web Handler	248
	Viewing the Page	261
	Further Applications	262
	Summary	264
	Visualizing Query Results in Management Studio	266
	SQL Server Management Studio	266
	Visualizing Spatial Results	266
	Choosing Visualization Options	268
	Supported Projections	269
	Summary	274
	Examining Properties of Spatial Objects	277
	Returning the Name of a Geometry Type	278
	Returning the Number of Dimensions Occupied by a Geometry	279
	Testing Whether a Geometry Is of a Particular Type	280
	Testing Whether a Geometry Is Simple	285
	Testing Whether a Geometry Is Closed	287
	Testing Whether a LineString Is a Ring	289
	Counting the Number of Points in a Geometry	291
	Testing Whether a Geometry Is Empty	292
	Returning Cartesian Coordinate Values	294
	Returning Geographic Coordinate Values	295
	Returning Extended Coordinate Values	296
	Returning a Specific Point from a