what’s new for developers in sql server 2008 mike taulty, mike ormond developer & platform...
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What’s New for Developers in SQL Server 2008Mike Taulty, Mike OrmondDeveloper & Platform GroupMicrosoft [email protected] (http://www.mtaulty.com)[email protected] (http://www.mikeo.co.uk )
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Agenda
Relational++New data types beyond the traditional RDBMS
Data In, Data OutInformation from DataDatabase ApplicationsCore Capabilities & Tooling
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Relational++
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New Data Types
FILESTREAMExtension to varbinary(max)Data is stored in the file systemAccess with file system API’s or relational API’s
HIERARCHY IDModel the traditional employee/manager relationship
New Date & Time data typesDATE, TIME, DATETIMEOFFSET, DATETIME2 & functions to deal with them
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XML Data Type Enhancements
Improved schema validation supportSupports validation of Office 12 documentsAllows for lax contentUnions of listsLists of unions
XQuery supportFWOR finally becomes FLWOR (the let clause)
Use of variables in .modify() operations
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CLR Data Type Enhancements
UDTs > 8K possible for CLR implementationsAggregates
Multi-input aggregates now possible in CLR implementations Aggregates > 8K now possible in CLR implementations
Sort order on CLR Table Valued FunctionsToday, SQL spools output from CLR TVF’s and then sorts them – often this is redundant
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Data Types, XML, CLR
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Spatial Data
Proliferation of geographical dataGPS SystemsVirtual Earth, Live Search Maps etc
New opportunities for spatially aware appsRoute planningLand assessmentTerritory analysis
SQL Server 2008Storage and retrieval of spatial data using standard SQL syntax
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Spatial Data Types
Comprehensive SupportFlat Earth (Planar) - geometryRound Earth (Geodetic) – geography
CLR System TypesMicrosoft.SqlServer.Types.Geo[metry | graphy]Host of useful spatial methods / properties (OGC)Importing of WKT / WKB (OGC) and GML data
High PerformanceIntegrated into SQL 2008Spatial Index support
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Spatial Data in SQL 2008
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Semi-Structured Additions
Sparse columnsOptimised storage for sparsely populated columns
Wide TablesSupport for hundreds of thousands of sparse columns
Filtered IndexesDefine indices over subsets of data in tables
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ProducID Description Category Price Current Colour Size Volume Fabric Fitment COSHH
1 Dulux Emulsion
Paint 22.95 False Blue - 1.5 - - 8729
2 Roller Tools 3.95 False - L - - - -
3 Rug Home 79.50 False Brown - - Wool - -
4 Bulb Electrical 1.25 True Pearl - - - Screw -
5 Weedkiller Garden 7.99 True - - 1.0 - - 2776
6 Bamboo Garden 35.00 True Yellow - - - - -
7 2x4 Wood 2.95 True - - - - - -
8 ... ... ... ... ... ... ... ... ... ...
ProducID Description Category Price Current Colour Size Volume Fabric Fitment COSHH
1 Dulux Emulsion
Paint 22.95 False Blue - 1.5 - - 8729
2 Roller Tools 3.95 False - L - - - -
3 Rug Home 79.50 False Brown - - Wool - -
4 Bulb Electrical 1.25 True Pearl - - - Screw -
5 Weedkiller Garden 7.99 True - - 1.0 - - 2776
6 Bamboo Garden 35.00 True Yellow - - - - -
7 2x4 Wood 2.95 True - - - - - -
8 ... ... ... ... ... ... ... ... ... ...
Semi-Structured Additions‘Fixed’ Columns Sparse Columns
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Data In, Data Out
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SQL Server Integration Services
New Script Environment for Script Tasks & Components
VSTA replaces VSA (deprecated)– C# language programmability– More of the familiar VS environment
ADO.NET Source and DestinationOLEDB source/destinations still there
Data Profiling Task & Viewer
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SQL Server Integration Services
Data Flow performanceIn 2005, an execution tree (even with branches) is executed on a single threadIn 2008, this is handled differently (i.e. better)
Lookup TransformationShare cached lookup across packagesMore granular control over cache use for matched/non-matched data
Additional changes elsewhereMERGE, Change Data Capture, Data Types, etc.
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Integration Services
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Tracking Changes
Change TrackingSynchronous - when the DML is committedDetect net changes to dataTables/Rows effectively have a version #Good for building one- and two- way sync solutions
Change Data CaptureAsynchronous - reads transaction logDetect net and incremental changes to dataGood for building one- way sync solutions
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Change Tracking & Data Capture
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MERGE
DML statement combining multiple operations into one
source targetMerge
match so UPDATE
no match so INSERT
no source match so DELETE
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MERGE statement
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ADO.NET Synchronisation Services
Synchronisation FrameworkOnline/Offline Applications2-tier, N-tier architectures
Set of componentsSync ClassesClient Database
– SQL Server Compact EditionServer Database
– Any ADO.NET store
“Service” Based Approach
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ADO.NET Synchronisation Services
Server SyncProvider
SyncAgent
SyncAdapters
Client SyncProvider
Sync TableSync Group
Client DB
Server DB
Transport
Proxy Service
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Microsoft Synchronisation Services
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Information from Data
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Reporting Services
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Reporting Services
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Reach All your Users withScalable BI platform
Deliver insights throughout your organization
Deliver reports of any size at enterprise scaleScale out through read-only Analysis Services storageEnhance analytical capabilities with more complex computations and aggregations
Deploy and manage your BI infrastructure
Streamline development of the analysis infrastructure with new cube design toolsOptimize cube design with real time best practice alerts Backup cubes with enhanced scalability
PervasivePervasiveInsightInsight
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Database Applications
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Client Library Support for Features
Visual Studio 2008 ships with;.NET Framework V3.5
– Support for most new SQL 2008 data types– Support for table valued parameters
Microsoft Synchronization ServicesSQL Server 2008 ships with;
Client library support for some new data types;– Microsoft.SqlServer.Types.dll (SqlGeometry, SqlHierarchyId)
ADO.NET V3.0 Entity Framework, Data Services ship separately
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Table Valued Parameters
Stored procedures and functions can now take a table as a parameter
Passing “arrays” of data to the server in one goOften done in the past with XML, strings
MechanismDeclare table type server sideDefine parameter to be of table typeNew ADO.NET parameter type SqlDbType.Structured
– Pass DataTable, IEnumerable<SqlDataRecord>, DbDataReader into ADO.NET client side
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Table Valued Parameters
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.NET Entity Provider (Entity SQL)
Command
ConnectionReader
Adapter
V3.0
ADO.NET Entity Framework
Store
.NET Data Provider
V2.0
Command
ConnectionReader
Adapter
V3.0
Conceptual Model
Entity Entityrelationship
Mapping (MSL)
V3.0Programming Model
Object Relational Mapping
LINQ
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ADO.NET Entity Framework
Schema independenceStore independenceHigher level constructs
RelationshipsInheritance
StatusAt Beta 2 TodayTooling at CTP 1
Store
.NET Provider
V2.0
Conceptual Model
.NET Provider(EntitySQL)
ORM & LINQ
V3.0
Map
ping
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ADO.NET Entity Framework
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ADO.NET Data Services (“Astoria”)
Flexible data services for the webHTML + Javascript
Data (XML, JSON)
DLL + XAML
Data (XML, JSON) Data (XML, JSON)
Mashup UI
Data Feeds
URI addressable resources (RESTful)Simple data formats (XML / JSON)Modelling of data with EDMCRUD operations support
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Astoria URI Format
Data Service URL (special WCF service)Entity Set Name (eg Customers)
Optional PredicateNavigation Property (eg Orders)
Optional PredicateQuerystring Options (eg orderby)
http://localhost/service.svc/Customers[ALFKI]/Orders?$orderby=City
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ADO.NET Data Services
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Core Capabilities
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Resource Governor
Dynamically monitors & controls access to server resources
request
Resource Pool 1 Resource Pool 2
Workload Group 1
Workload Group 2
MIN, MAX CPUMIN, MAX RAM
MIN, MAX CPUMIN, MAX RAM
Workload Group 3
Workload Group 1
PriorityMax Request MemoryMax Request CPU TimeMax DOPMax Requestsclassify()
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Resource Governor
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Guiding Procedure Execution
More control & visibility of stored procedure execution to aid predictable execution
sp_create_plan_guide accepts XML Showplan outputsp_create_plan_guide_from_cachesys.fn_validate_plan_guidePlan guides visibile in Management Studio
MonitoringEvents – Plan Guide (Un)SuccessfulCounters – (Mis)Guided Plan Executions/Sec
– on SQL Statistics object
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Guiding Procedure Execution
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Data Collector
Collection SetCollection SetCollection Set
Performance Studio
Unified framework for capturing “metrics” from SQL Server
Collection ItemCollection ItemCollection Item
Counter, SQL trace or SQL query
schedule
InterfacesMgmt StudioS’procsAPIDashboard UI post SQL 2008
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Data Collector
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Extended Events (XEvent)
High performance eventing system for SQLIntegrates with Event Tracing for Windows (ETW)Possibility of end-to-end tracing
DDL for managing event sessions on a server
“When” to log
Where to send it Data to
logFilters
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Extended Events
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Auditing (not in current CTP)
Written to files or event logsServer level auditing
– Login, Logoff, Create DB, etc. (many)
Database level auditing– Changes to Users, Roles, Schema, etc. (many)
Granular level auditing– CRUD + EXECUTE on tables, views, procedures, etc.
AUDIT UPDATE ON Employee [BY User1]
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Platform Enhancements
Transparent Data Encryption (TDE)Encrypt my data on disk transparent to applications
Database Compression (not in CTP5)ROW / PAGE Compression
Integrated Full Text Search (not in CTP5)Easier to deploy / manage and better performance
Declarative Management Framework Establish policies for monitoring or compliance
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Platform Enhancements
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MSDN in the UK
Visit http://msdn.co.uk NewsletterEventsScreencastsBlogs
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