Building Applications with SQL Server 2008 Lynn Langit http://blogs.msdn.com/SoCalDevGal

What Will We cover? SQL Server Spatial support T-SQL Enhancements Visual Studio integration SQL CLR Reporting Services

SQL Server Spatial support

T-SQL Enhancements

Visual Studio integration

SQL CLR

Reporting Services

What is Spatial Data? Spatial data represents locations Which roads intersect property or each other? How many stores/restaurants/houses/car dealerships are located within a geographical area? Represented by two primary data types Geometry : small areas where curvature of the Earth isn’t so relevant Flat Earth model or X, Y coordinates Geography : large areas where the curvature of the Earth does matter Round Earth model or Latitude and longitude coordinates You query for location information as you would any SQL Server data type Data types dictated by the OpenGIS standard

Spatial data represents locations

Which roads intersect property or each other?

How many stores/restaurants/houses/car dealerships are located within a geographical area?

Represented by two primary data types

Geometry : small areas where curvature of the Earth isn’t so relevant

Flat Earth model or X, Y coordinates

Geography : large areas where the curvature of the Earth does matter

Round Earth model or Latitude and longitude coordinates

You query for location information as you would any SQL Server data type

Data types dictated by the OpenGIS standard

Representing Spatial Data Stored in proprietary binary format Can be input using simple text ( Parse methods convert text into internal storage format) Represents areas using Points, Line strings, Polygons Multi Points, Multi Line strings, Multi Polygons Geom Collection Areas must be defined in counter-clockwise direction, but Interior areas (“holes”) must be defined in clockwise direction Spatial Reference ID (SRID) identifies ellipsoid used (flat/round, meters/feet) Only instances with like SRID can be directly compared

Stored in proprietary binary format

Can be input using simple text ( Parse methods convert text into internal storage format)

Represents areas using

Points, Line strings, Polygons

Multi Points, Multi Line strings, Multi Polygons

Geom Collection

Areas must be defined in counter-clockwise direction, but Interior areas (“holes”) must be defined in clockwise direction

Spatial Reference ID (SRID) identifies ellipsoid used (flat/round, meters/feet)

Only instances with like SRID can be directly compared

Geographical Data GEOGRAPHY type has additional requirements Coordinate order is longitude/latitude A single GEOGRAPHY object cannot span more than a logical hemisphere Will throw exceptions if too large

GEOGRAPHY type has additional requirements

Coordinate order is longitude/latitude

A single GEOGRAPHY object cannot span more than a logical hemisphere

Will throw exceptions if too large

SQL Server Geospatial and Virtual Earth

Geo Spatial Links Practical uses for Geospatial data Series on use of Geospatial data in SQL Server 2008 OpenGIS standards OGC Methods on Geography Instances OGC Methods on Geometry Instances

Practical uses for Geospatial data

Series on use of Geospatial data in SQL Server 2008

OpenGIS standards

OGC Methods on Geography Instances

OGC Methods on Geometry Instances

Enhancements to T-SQL Table Value Parameters New Date/Time types Time zone awareness New MERGE keyword New shorthand notation

Table Value Parameters

New Date/Time types

Time zone awareness

New MERGE keyword

New shorthand notation

Table Value Parameters TVPs are used to insert/update multiple tables at one time MARS-like capability for writing ADO.NET updated to include support New parameter type: SqlDbType.Structured MSDN documentation

TVPs are used to insert/update multiple tables at one time

MARS-like capability for writing

ADO.NET updated to include support

New parameter type: SqlDbType.Structured

MSDN documentation

Dates and Time Several new types added datetime2 date time datetimeoffset New functions added CONVERT SYS* Functions DATEDIFF

Several new types added

datetime2

date

time

datetimeoffset

New functions added

CONVERT

SYS* Functions

DATEDIFF

MERGE MERGE allows for insert, update, delete with one keyword Merge two tables, source and target Target table will be modified based on contents of source table Syntax and use can be complex! Review BOL for details

MERGE allows for insert, update, delete with one keyword

Merge two tables, source and target

Target table will be modified based on contents of source table

Syntax and use can be complex!

Review BOL for details

Shorthand Notation Allows you to declare a variable and assign a value in one line of code More like contemporary programming languages, C# or Visual Basic .NET

Allows you to declare a variable and assign a value in one line of code

More like contemporary programming languages, C# or Visual Basic .NET

T-SQL Enhancements

Visual Studio Integration Enhanced project types SQL CLR Database projects Analysis Services OLAP cubes Data Mining Structures Integration Services Reporting Services

Enhanced project types

SQL CLR Database projects

Analysis Services

OLAP cubes

Data Mining Structures

Integration Services

Reporting Services

Entity Framework Essentially an OR/M tool Models relational data using entities Can model any relational data source for data access (provider may be required) Application-specific domain You can work at a higher level of abstraction Appropriate amount of information returned Lazy-loaded What is an entity? Structurally like an object Has scalars and relationships Has identity Represent nouns in your application domain Not tied specifically to SQL Server

Essentially an OR/M tool

Models relational data using entities

Can model any relational data source for data access (provider may be required)

Application-specific domain

You can work at a higher level of abstraction

Appropriate amount of information returned

Lazy-loaded

What is an entity?

Structurally like an object

Has scalars and relationships

Has identity

Represent nouns in your application domain

Not tied specifically to SQL Server

Architecture

Visual Studio Integration

SQL CLR SQL Server has the ability to execute managed code Stored procedures Functions Aggregates Table value functions User-defined types Triggers Visual Studio can manage both creation and deployment SQL CLR is “off by default” for security reasons Must activate per database to enable Can be remotely debugged With great power comes great responsibility Your code executes in the SQL Server processing stream

SQL Server has the ability to execute managed code

Stored procedures

Functions

Aggregates

Table value functions

User-defined types

Triggers

Visual Studio can manage both creation and deployment

SQL CLR is “off by default” for security reasons

Must activate per database to enable

Can be remotely debugged

With great power comes great responsibility

Your code executes in the SQL Server processing stream

Programming SQL CLR Visual Studio provides templates for the various SQL CLR constructs Uses Database project type Simply “add new” like any other item you might add Metadata controls SQL Server behavior Attributes control programmatical type Microsoft.SqlServer.Server.SqlProcedure Microsoft.SqlServer.Server.SqlFunction Microsoft.SqlServer.Server.SqlUserDefinedAggregate Microsoft.SqlServer.Server.SqlTrigger Microsoft.SqlServer.Server.SqlUserDefinedType You write your logic using a .NET-supported language You work with other objects in the Microsoft.SqlServer.Server namespace to retrieve and return data Very ADO.NET-like, but not ADO.NET Can be assigned security levels Safe, External, Unsafe

Visual Studio provides templates for the various SQL CLR constructs

Uses Database project type

Simply “add new” like any other item you might add

Metadata controls SQL Server behavior

Attributes control programmatical type

Microsoft.SqlServer.Server.SqlProcedure

Microsoft.SqlServer.Server.SqlFunction

Microsoft.SqlServer.Server.SqlUserDefinedAggregate

Microsoft.SqlServer.Server.SqlTrigger

Microsoft.SqlServer.Server.SqlUserDefinedType

You write your logic using a .NET-supported language

You work with other objects in the Microsoft.SqlServer.Server namespace to retrieve and return data

Very ADO.NET-like, but not ADO.NET

Can be assigned security levels

Safe, External, Unsafe

SQL CLR

Reporting Services SQL Server standard for reporting Managed enterprise reporting / Ad-hoc reporting / Embedded reporting / Web-based reporting Reports can be formatted in a variety of ways PDF / Word 2007 / HTML, custom Reports are exposed via a Web Service Can be integrated with SharePoint Dependency on IIS removed (uses http.sys) Strong designer and wizard support in Visual Studio Can also use Report Builder Enhanced configuration and administration tool SSRS available in SQL Server Express 2008 w/Adv Services

SQL Server standard for reporting

Managed enterprise reporting / Ad-hoc reporting / Embedded reporting / Web-based reporting

Reports can be formatted in a variety of ways

PDF / Word 2007 / HTML, custom

Reports are exposed via a Web Service

Can be integrated with SharePoint

Dependency on IIS removed (uses http.sys)

Strong designer and wizard support in Visual Studio

Can also use Report Builder

Enhanced configuration and administration tool

SSRS available in SQL Server Express 2008 w/Adv Services

Programming Reports Design reports in Visual Studio 2008 SP1 Query for data Assign query results to report Design report style Colors Fonts Deploy report Web Service SharePoint Services Report Viewer control in Visual Studio Wizard available for initial report design

Design reports in Visual Studio 2008 SP1

Query for data

Assign query results to report

Design report style

Colors

Fonts

Deploy report

Web Service

SharePoint Services

Report Viewer control in Visual Studio

Wizard available for initial report design

Reporting Services

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