1. Spatial Data and Windows Azure SQL Database
Windows Azure SQL Database and Geospatial support
Mihail Mateev
Senior Technical Evangelist, Infragistics

2. Добро Пожаловать!

3. About me
Mihail Mateev is a Senior Technical Evangelist, Team Lead at Infragistics Inc., Community Lead for Europe
Mihail works in various areas related to Microsoft technologies : Silverlight, WPF, WP, LightSwitch, WCF, ASP.Net MVC,, MS SQL Server and Windows Azure

4. Agenda What is Spatial Data Spatial Reference System
Geospatial Features
Spatial Data Types
Creating Spatial Data
Import Spatial Data
Windows Azure SQL Database Architecture
Migrating Spatial Data to SQL Azure
Using Spatial Data in Windows Azure SQL Database

5. What is Spatial Data
Spatial data describes the position, shape and orientation of objects in space

6. What is Spatial Data Analyzing sales trends
Analyzing the best placement depending of different criteria
Navigating to s destination using a GPS device
Allowing customers to track the deliveries
Finding the optimum route for transportation tasks
Reporting geospatial information on the map rather than in a tabular or chart format

7. Spatial Reference Systems
Define positions on a three-dimensional, round model of the earth

8. Spatial Reference Systems
Describe the position of points on the earth surface as the lie on a flat, two-dimensional plane.
- X
+ Y
- X
- Y
+ X
- Y X
Data
usually here Y

9. Spatial Reference Systems
Datum is a set of reference points on the Earth's surface against which position measurements are made
Local datum NAD27
Ellipsoid CLARKE 1866
Earth-centered datum NAD83
Ellipsoid GRS80 + * *
Earth surface
Center of the Earth's mass

10. Spatial Reference Systems
Reference ellipsoid
An approximation of the surface shape of the earth (or rather, the geoid) spheroid used for the needs of geodesy at some of the earth's surface

11. Geospatial Features Points Polylines Polygons Points Polylines

12. Geospatial Features Vector Data:
describes discrete spatial objects by defining the coordinates of geometries that approximate the shape of those features
X,Y
X,Y
X,Y
X,Y

13. Geospatial Features Raster Data:
represents spatial information using a matrix of cells. These cells are arranged into a grid that is overlaid onto the surface of the earth.
Rows
X,Y
Columns

14. SQL Server Spatial Data Types
SQL Server supports two different spatial data types
GEOMETRY and GEOGRAPHY

15. Shapefile format Donut shapefile Donut.dbf table
Shape field accesses separate coordinate files

16. Spatial Data Types Spatial data and SQL Server Point MultiPoint
LineString
MultiLineString
Polygon
MultiPolygon
GeometryCollection

17. Creating Spatial Data
Creation of spatial objects

18. Creating Spatial Data Creation of spatial objects
Creating instances of UDT (User Defined Types)
Geometry and Geography data types are implemented as user-defined types (User Defined Types, UDT), written on. NET. They are automatically installed with the server and are available for use in any database, SQL Server.
Any variable, parameter, or column of a table can be declared as the type of Geometry. Note that the type name is not case sensitive.
Geometry

19. Creating Spatial Data The use of spatial data
Use STGeomFromText () to create a LineString
Geometry
= Geometry::STGeomFromText('LINESTRING(0 0, 10 10, 21 2)', 0)

20. Creating Spatial Data The use of spatial data
Use STGeomFromText () and STPointFromtext ()
as geometry
= geometry::STPointFromText('POINT( )', 27700)
as geometry
= geometry::STGeomFromText('POINT( )', 27700)

21. Creating Spatial Data The use of spatial data Z and M coordinates
Z coordinate represents the height or the height of a point.
M coordinates are stored "measure" value of point. These coordinates can be used to provide additional details of a point, which can be expressed as a double-precision
Imagine WKT from the Z and M coordinates:
POINT (x y z m) or PONT (longitude latitude z m)

22. Creating Spatial Data The use of spatial data
Management of spatial data
CREATE TABLE SpatialTable
     (Id int IDENTITY (1,1),
     GeomCol1 geometry,
     GeomCol2 AS GeomCol1.STAsText ()); GO
INSERT INTO SpatialTable (GeomCol1)
VALUES (geometry :: STGeomFromText ('LINESTRING ( , , ), 0));

23. Creating Spatial Data The use of spatial data
Management of spatial data
STBuffer
@g.STBuffer(8).ToString()
STExteriorRing
@g.STBuffer(8).STExteriorRing().ToString()

24. Creating Spatial Data The use of spatial data
Management of spatial data
STArea, STLength
GEOMETRY = 'POLYGON((10 10, 10 40, 40 40, 10 10))'
as as Length

25. Creating Spatial Data Using Stored Procedures
CREATE PROCEDURE [dbo].[get_SelectedData] @pCntrNameValue nvarchar(255)
BEGIN
SET NOCOUNT ON;
SELECT geom.STBuffer(2) as geom, CNTRY_NAME, POP_CNTRY FROM world WHERE CNTRY_NAME
END

26. Indexing The Need for a Spatial Index How Does a Spatial Index Work?
The Primary and Secondary Filter
Primary filter:
Secondary filter:

27. Indexing
The Grid Structure of a Spatial Index

28. Indexing
The Grid Structure of a Spatial Index

29. Indexing
Optimization Rules a Multilevel Grid Index
Covering Rule

30. Indexing Using Spatial Indexes: USING GEOMETRY_GRID WITH (
BOUNDING_BOX = (0, 0, 4096, 4096),
GRIDS = (
LEVEL_1 = MEDIUM,
LEVEL_2 = MEDIUM,
LEVEL_3 = MEDIUM,
LEVEL_4 = MEDIUM),
CELLS_PER_OBJECT = 16);

31. Indexing Using Spatial Indexes: SELECT id
FROM Points WITH(INDEX(sidxPoints))
WHERE = 1;

32. Creating Spatial Data
Using Stored Procedures

33. Import Spatial Data SQL Server import and export spatial data formats
Well Known Text,
Well Known Binary
Geographic Markup Language (GML)
Shapefile

34. Import Spatial Data Import spatial data in SQL Server
Conversion Utilities:
ShapeToSQL:
Shp2text:
FME :
Manifold:

35. Windows Azure SQL Database Architecture
There are four different levels of abstraction, which work together to provide a relational database for your application:
Client layer
Services layer
Platform layer
Infrastructure layer
SQL Azure offers only DTS endpoint
For each Windows Azure SQL database instance there was created 3 copies of SQL

36. Windows Azure SQL Database Architecture
Azure SQL Database Disadvantages
Azure SQL Database does not support the following functions of the database
Service Broker
HTTP access
CLR stored procedures

37. Windows Azure SQL Database Architecture
Azure SQL Database Disadvantages
Azure SQL Database support spatial data types, but developers need to deploy libraries with spatial CLR types with their applications. Windows Azure has no installed predefined SQL spatial data types
Azure SQL Database does not support the following functional features
Distributes query
Distributed transactions
Any SQL query and views that change or get physical information resources

38. Migrating Spatial Data to SQL Azure
SQL Server 2008/2008 R2
Microsoft SQL Management Studio for SQL Server 2008/2008 R2 does not support the transfer of spatial data in Azure SQL Database
SQL Azure Migration Wizard:

39. Migrating Spatial Data to SQL Azure
SQL Server 2012
Microsoft SQL Management Studio for SQL Server 2012 does supports the transfer of spatial data in Azure SQL Database

40. Migration of systems with spatial data in Windows Azure SQL Database
Create a new Azure SQL database
Database migration – migrate your databse from the local SQL Server to SQL Azure
Add a new Windows Azure Storage Account and Web services
Add web project role in the decision
Change settings in the Web.config and ServiceReferences.ClientConfig
Publish Windows Azure Cloud Service

41. Using Spatial Data in Windows Azure SQL Database
Processing of spatial data using .NET in Windows Azure
SqlCommand sqlCommand = new SqlCommand();
sqlCommand.Connection = sqlConnection;
sqlCommand.CommandType = System.Data.CommandType.StoredProcedure;
sqlCommand.CommandText = "get_WorldData";
sqlConnection.Open();
SqlDataReader reader = sqlCommand.ExecuteReader();
if (reader != null)
while (reader.Read()) {
Dictionary<string, string> valueDictionary = new Dictionary<string, string>();
for (int i = 0; i < reader.FieldCount; i++)
valueDictionary.Add(reader.GetName(i), reader.GetValue(i).ToString()); }
list.Add(valueDictionary);
....

42. Using Spatial Data in Windows Azure SQL Database
Using Entity Framework 5
List<SpatialPoint> multiPoints = new List<SpatialPoint>();
var numPoints = country.geom.Envelope.ElementAt(1).PointCount;
for (int i = 1; i <= numPoints; i++) {
SpatialPoint pnt = new SpatialPoint((double)(country.geom.Envelope.ElementAt(1). PointAt(i).XCoordinate), (double)(country.geom.Envelope.ElementAt(1).PointAt(i). YCoordinate));
multiPoints.Add(pnt); }
SpatialRect rect = multiPoints.GetBounds();

43. Using Spatial Data in Windows Azure SQL Database
Windows Azure Web Site and spatial data
Creating a Windows Azure Web Site

44. Using Spatial Data in Windows Azure SQL Database
What libraries to use?
Microsoft.SqlServer.Types.dll
(managed) .NET library
\Program Files(x86)\Microsoft SQL Server\110\SDK\Assemblies
SQLServerSpatial.dll / SQLServerSpatial110.dll
(unmanaged) C++ library
\Windows\System32

45. Using Spatial Data in Windows Azure SQL Database
Getting libraries
Project –> Add Existing Item \Windows\SysWOW64 -> msvcp110.dll and msvcr110.dll files (Visual Studio 2012) or msvcp100.dll и msvcr100.dll  (Visual Studio 2010) .

46. Using Spatial Data in Windows Azure SQL Database
Getting libraries
Set the properties of msvcp110.dll, msvcr110.dll and SqlServerSpatial110.dll to “Copy to Output directory = Copy always”

47. Demo

48. Spatial Data and Windows Azure Storage
Using spatial data in the Windows Azure Blob Storage
Accessing the Windows Azure Storage is done via a storage account. A storage account can have many blob containers. A container is a user-defined set of blobs that has only properties, which include a list of the blobs it contains. Containers don’t store data directly.

49. Spatial Data and Windows Azure Storage
Windows Azure Blob Storage
Windows Azure Blob Storage Concepts

50. Spatial Data and Windows Azure Storage
Windows Azure Blob Storage
Blob URL
URL:
Types of Blobs
Block Blob
Page Blob

51. Spatial Data and Windows Azure Storage
Steps to Implement Azure Application Reading Shapefiles from Blob Storage
Implement a WCF to upload and download files, using Windows Azure Blob Storage.
Add in the client application (ASP.Net / Silverlight ) XamMap component.
Implement shapefile loading from Isolated Storage to XamMap.
Create a new Windows Azure Storage Account and a Hosted Service (if you are using a Windows Azure Account).
Add a Web Role project in Solution
Edit settings in ServiceReferences.ClientConfig .
Publish the Windows Azure Cloud Service

52. Useful links Shape To SQL Tools SAFE Software Infragistics Blogs
SAFE Software
Infragistics Blogs

53. Спасибо за внимание!

54. Вопросы и ответы

55. Спонсоры