SQL Mobile 2005: SQL Mobile 2005: OverviewOverview

Gaurav Khanna, Developer EvangelistGaurav Khanna, Developer EvangelistDeveloper & Platform EvangelismDeveloper & Platform EvangelismMicrosoft Corporation (India)Microsoft Corporation (India)

AgendaAgenda

• IntroductionIntroduction• Supported PlatformSupported Platform• Release Schedule & LicenseRelease Schedule & License• ArchitectureArchitecture• FeaturesFeatures• Data SyncData Sync• PerformancePerformance

IntroductionIntroduction• MobilityMobility

Freedom to work anywhere with up to date dataFreedom to work anywhere with up to date data Connected and DisconnectedConnected and Disconnected

• Offline/Disconnected solutionOffline/Disconnected solution App can execute without a connectionApp can execute without a connection

Client side business logic executes on deviceClient side business logic executes on device Data store on deviceData store on device Data is Synchronized with Backend serverData is Synchronized with Backend server Integrated with enterprise appsIntegrated with enterprise apps

• Customer ScenariosCustomer Scenarios Field Force AutomationField Force Automation DSDDSD HealthcareHealthcare CRMCRM Inventory Inventory MilitaryMilitary

Introduction – SQL MobileIntroduction – SQL Mobile• SQL CE 3.0 or SQL Server 2005 Mobile SQL CE 3.0 or SQL Server 2005 Mobile

EditionEdition• Relational database with small foot printRelational database with small foot print• New code base - developed from scratchNew code base - developed from scratch• ADO and OLEDB programming interfaceADO and OLEDB programming interface• Desktop access/management for Desktop access/management for

developmentdevelopment• Multi user accessMulti user access• Sync mechanism with SQL Server (2000, Sync mechanism with SQL Server (2000,

2005)2005)• SecuritySecurity

• Dependant upon .NET CF 2Dependant upon .NET CF 2

SQL Mobile –Platform, Schedule, SQL Mobile –Platform, Schedule, LicenseLicense• Pocket PC 2003, Phone Pocket PC 2003, Phone

edition(03,05)edition(03,05)• Smart Phone 5.0Smart Phone 5.0• Windows CE.NET 5.0Windows CE.NET 5.0• Tablet PCTablet PCReleaseReleaseWith VS 2005 and SQL 2005With VS 2005 and SQL 2005Beta1 & Beta2 already releasedBeta1 & Beta2 already released

LicenseLicense•Same as SQL CE 2.0Same as SQL CE 2.0•Desktop development for DB if VS 2005 or Desktop development for DB if VS 2005 or SQL Server 2005 installedSQL Server 2005 installed

Platform – Project Types Platform – Project Types • DeviceDevice

Pocket PC 2003Pocket PC 2003 Windows Mobile 5.0Windows Mobile 5.0 Smartphone Mobile 5.0Smartphone Mobile 5.0 Win CE 5.0Win CE 5.0

Storage EngineStorage Engine

Internal SE APIInternal SE APIeDB APIeDB API

QPQP

Internal QP APIInternal QP API

SQL Mobile - SQL Mobile - Architecture Architecture

ReplicationReplicationandandRDARDA

OLEDB / OLEDB / Replication APIReplication API

CLIENTCLIENT SERVERSERVER

IISIIS

Server Server Agent: Agent:

ReplicationReplicationandand

Remote Remote Data Data

AccessAccessHTTPHTTP

XML/BizTalk/CS XML/BizTalk/CS 2002/DTS2002/DTS

Enterprise BackendEnterprise Backend

Oracle / db2 / etcOracle / db2 / etc

Occasionally Occasionally ConnectedConnected

OLE DBOLE DB

PIM AppsPIM Apps Native AppsNative Apps Managed SQL CE + eDB AppsManaged SQL CE + eDB Apps

VS 2005 C++VS 2005 C++

CLR / .NET CFCLR / .NET CF

SQL Mobile Data SQL Mobile Data ProviderProvider

SQL Client SQL Client Provider Provider

VS 2005 (VB.NET, C#)VS 2005 (VB.NET, C#)

AgendaAgenda

• IntroductionIntroduction• Supported PlatformSupported Platform• Release Schedule & LicenseRelease Schedule & License• ArchitectureArchitecture• FeaturesFeatures• Data SyncData Sync• PerformancePerformance

SQL Mobile - Feature SetSQL Mobile - Feature Set• Desktop DevelopmentDesktop Development

Tablet PC, Scaling and Deployment testingTablet PC, Scaling and Deployment testing• Integration with VS 2005Integration with VS 2005• Integration with SQL Server 2005Integration with SQL Server 2005• SQL (DDL/DML) SupportSQL (DDL/DML) Support

• Powerful Sync mechanismPowerful Sync mechanism Column Level TrackingColumn Level Tracking Multiple subscriptionMultiple subscription Download only articlesDownload only articles Conflict ResolutionConflict Resolution

• Programming InterfaceProgramming Interface ADO.NETADO.NET OLEDBOLEDB

• Improvement for GPRS connectivityImprovement for GPRS connectivity• Features for better performanceFeatures for better performance

New SQLCEResultSet & many moreNew SQLCEResultSet & many more• DTS SupportDTS Support• Easy migration from SQL CE 2.0Easy migration from SQL CE 2.0

SQL Mobile New Features SQL Mobile New Features – Storage Engine– Storage Engine• Storage engine re-written to further Storage engine re-written to further

optimize for mobile applicationsoptimize for mobile applications• Multi-User supportMulti-User support

Row level locking dataRow level locking data Lock EscalationLock Escalation

• Improved stabilityImproved stability• Auto re-use of empty pagesAuto re-use of empty pages

SQL Mobile New Features SQL Mobile New Features – Query Processor– Query Processor• ShowPlanShowPlan• Query Optimization HintsQuery Optimization Hints

View Plan and do performance tuningView Plan and do performance tuning• Named parameters/Parameterized Named parameters/Parameterized

QueriesQueries

SQL Server 2005 SQL Server 2005 Management Studio Management Studio IntegrationIntegration• Same user experience, SQL Server or SQL MobileSame user experience, SQL Server or SQL Mobile• Functionally equivalentFunctionally equivalent

Object ExplorerObject Explorer Query EditorQuery Editor Management DialogsManagement Dialogs

• CapabilitiesCapabilities Create SQL Mobile DatabasesCreate SQL Mobile Databases Show Plan and HintsShow Plan and Hints Faster OptimizationFaster Optimization Enhanced PublicationEnhanced Publication Subscription WizardSubscription Wizard DTS SupportDTS Support

Visual Studio 2005 Visual Studio 2005 IntegrationIntegration• Integrated with Server ExplorerIntegrated with Server Explorer

Connect to SDF on device, emulator, or desktopConnect to SDF on device, emulator, or desktop Manage database schema, view / edit dataManage database schema, view / edit data

• Drag and Drop GenerationDrag and Drop Generation Drag tables and columns onto form to create databound Drag tables and columns onto form to create databound

controlscontrols SqlCeResultSet class, enables performant, type safe, SqlCeResultSet class, enables performant, type safe,

cursor style developmentcursor style development Enabled in the DataSource window for drag and Enabled in the DataSource window for drag and

drop developmentdrop development• End to End development.End to End development.

Add SDF to your projectAdd SDF to your projectIf the database hasn’t changed, it won’t get deployedIf the database hasn’t changed, it won’t get deployedEnsures the database is R/W for databases under source Ensures the database is R/W for databases under source controlcontrolDatabase in Server Explorer shows the database management Database in Server Explorer shows the database management toolstools

AgendaAgenda

• IntroductionIntroduction• Supported PlatformSupported Platform• Release Schedule & LicenseRelease Schedule & License• ArchitectureArchitecture• FeaturesFeatures• Data SyncData Sync• PerformancePerformance

Challenges in Mobile SyncChallenges in Mobile Sync• ConcurrencyConcurrency

Division of workflow across mobile user Division of workflow across mobile user basebase

Data changing on device, server, or bothData changing on device, server, or both Conflict resolution (Single Master vs. Multi-Conflict resolution (Single Master vs. Multi-

Master)Master)

• ConnectivityConnectivity ReliabilityReliability BandwidthBandwidth Security/FirewallsSecurity/Firewalls

• AdministrationAdministration

Choosing Sync ArchitectureChoosing Sync ArchitectureConsider Your Options….Consider Your Options….

• XML Web ServicesXML Web Services You design and control all behavioral aspectsYou design and control all behavioral aspects Only option for non-SQL Server synchronizationOnly option for non-SQL Server synchronization

• Remote Data Access (RDA)Remote Data Access (RDA) SQL-driven PULL and PUSH model SQL-driven PULL and PUSH model Change tracking with optimistic concurrency Change tracking with optimistic concurrency

• Merge ReplicationMerge Replication Publisher - Subscriber Model Publisher - Subscriber Model Advanced tracking and conflict resolutionAdvanced tracking and conflict resolution Centralized Control over Pubs and SubscribersCentralized Control over Pubs and Subscribers

Choosing Sync ArchitectureChoosing Sync ArchitectureStart at the beginning…Start at the beginning…• Questions for Architecture Planning:Questions for Architecture Planning:

Read-only data on device with occasional Read-only data on device with occasional updates?updates?

Data changing at one end or the other?Data changing at one end or the other? Data changing at both ends concurrently?Data changing at both ends concurrently? How large is the data to be synchronized?How large is the data to be synchronized?

Remote data access (RDA)Remote data access (RDA)

• RDA provides loosely-coupled RDA provides loosely-coupled connectivity between SQL CE & SQL connectivity between SQL CE & SQL ServerServertalks to SQL Server w/o being talks to SQL Server w/o being

“connected”“connected”store SQL Server query results directly in store SQL Server query results directly in

SQL CESQL CEautomatically tracks changes locallyautomatically tracks changes locally

send locally changed records back to SQL send locally changed records back to SQL ServerServer

RDA ArchitectureRDA Architecture

SQL CEServerAgent

SQL ServerOLE DBProvider

SQL ServerDatabase

InternetInformationServer (IIS)

HTTP

Application

SQL CE Client Agent

Database

SQL CE Engine

OL

E D

B

OLE DB

Merge ReplicationMerge ReplicationOverviewOverview• Provides data synchronization Provides data synchronization

between SQL Mobile and SQL Serverbetween SQL Mobile and SQL Server SQL Server is the publisherSQL Server is the publisher SQL Mobile is the subscriberSQL Mobile is the subscriber

• SQL Mobile receives initial snapshot SQL Mobile receives initial snapshot from SQL Serverfrom SQL Server

• Both SQL Mobile and SQL Server can Both SQL Mobile and SQL Server can modify the datamodify the data Conflict resolution can be customizedConflict resolution can be customized

Choosing A Data Sync Choosing A Data Sync StrategyStrategy

CRITERIACRITERIA BEST BEST CHOICECHOICE VIABLEVIABLE CHALLENGINCHALLENGIN

GG

Connectivity - WWAN/DialupConnectivity - WWAN/Dialup RDARDA WSWS MergeMerge

Connectivity - WLANConnectivity - WLAN RDARDA WS/MergeWS/Merge

Conflict ResolutionConflict Resolution MergeMerge WSWS RDARDA

Code to ImplementCode to Implement RDA/RDA/MergeMerge WSWS

Setup/Deployment EffortSetup/Deployment Effort RDARDA WSWS MergeMerge

Enterprise ManagementEnterprise Management MergeMerge WSWS RDARDA

Large Data VolumesLarge Data Volumes Merge/Merge/RDARDA WSWS

Server DBMS IndependenceServer DBMS Independence WSWS MergeMerge

Auto SQL CE DBMS CreationAuto SQL CE DBMS Creation MergeMerge

Ability to Secure Data SyncAbility to Secure Data Sync MergeMerge RDA/WSRDA/WS

SQLCESQLCE

Choosing Sync ArchitectureChoosing Sync ArchitectureGeneric Decision FlowchartGeneric Decision Flowchart

Server to Sync With

Sync Connectivity

Conflict Likelihood

Typical Sync Payload

Importance of Central Control

Need for Fine Sync

Control

Web Services

MergeReplication

RDA

SQL Server

WLAN/Ethernet

High High

Low

GPRSDialup

Other

High

< 1 MB

Low

> 1 MB

Low

AgendaAgenda

• IntroductionIntroduction• Supported PlatformSupported Platform• Release Schedule & LicenseRelease Schedule & License• ArchitectureArchitecture• FeaturesFeatures• Data SyncData Sync• PerformancePerformance

PerformancePerformance

• Performance by Database designPerformance by Database design• Query Processor Performance TipsQuery Processor Performance Tips• ADO.NET Performance TipsADO.NET Performance Tips

ResultSetResultSet

• Performance for Data SyncPerformance for Data Sync

SQL Mobile – Technical resources, Community & MVPSQL Mobile – Technical resources, Community & MVP

Product PageProduct Page :: http://www.microsoft.com/sql/ce/mobility/beta1.asphttp://www.microsoft.com/sql/ce/mobility/beta1.aspBOL and samples:BOL and samples: http://msdn.microsoft.com/SQL/SQLCE/default.aspxhttp://msdn.microsoft.com/SQL/SQLCE/default.aspxWebcastWebcast : : http://www.sqlservermobile.com/SQLMobileWebCastshttp://www.sqlservermobile.com/SQLMobileWebCastsWhite PaperWhite Paper : : Replication and RDA features Replication and RDA features

: Multi user access: Multi user accessNewsgroupNewsgroup : : microsoft.public.sqlserver.cemicrosoft.public.sqlserver.ceNewsgroupNewsgroup : : microsoft.private.whidbey.sqlmobilemicrosoft.private.whidbey.sqlmobileHands on LabHands on Lab : : Developing a SQL Mobile application with VS Developing a SQL Mobile application with VS 2005 and 2005 and SQL Server 2005 SQL Server 2005Developers conference :Developers conference : MEDC, TECHED etcMEDC, TECHED etcMSDN chatMSDN chat : : July 2005July 2005Other ResourcesOther Resources : . : .NET CF, VS, Win CE, SQL ServerNET CF, VS, Win CE, SQL Server

SQL Mobile – Technical ResourcesSQL Mobile – Technical Resources

Questions ?Questions ?

Q & A: Q & A: We want your feedback!We want your feedback!

Email: gkhanna@microsoft.comEmail: gkhanna@microsoft.comBlog: Blog:

http://blogs.msdn.com/gkhannahttp://blogs.msdn.com/gkhanna//

WWW: WWW: http://www.wintoolzone.com/http://www.wintoolzone.com/

© 2003-2004 Microsoft Corporation. All rights reserved.This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

SQL Mobile Data AccessSQL Mobile Data Access

Native StackNative Stack Managed StackManaged Stack

SQL Server Mobile EditionSQL Server Mobile Edition

CLR / .NET CFCLR / .NET CF

SQL Server CE SQL Server CE Data ProviderData Provider

ADO.NETADO.NET

VB .NET / C#VB .NET / C#VS 2005 C++VS 2005 C++

OLEDB CEOLEDB CE

OLEDB ProviderOLEDB Provider

QP / Cursor Engine / ESQP / Cursor Engine / ES

Storage Engine / Replication TrackingStorage Engine / Replication Tracking

SQL Mobile Synch SQL Mobile Synch EnhancementEnhancement

• Improved Sync ControlImproved Sync Control Multi-user syncMulti-user sync Progress notificationsProgress notifications Multiple Subscriptions in Multiple Subscriptions in

the same dbthe same db• SQL Workbench SQL Workbench

integrationintegration Improved Web Improved Web

Configuration WizardConfiguration Wizard New Subscription WizardNew Subscription Wizard Subsequent Sync SupportSubsequent Sync Support

• Sync PerformanceSync Performance Partitioned GroupsPartitioned Groups Dynamic Snapshots Dynamic Snapshots

(BCP)(BCP) Article Partition Article Partition

OptionsOptions Article Upload OptionsArticle Upload Options Column level trackingColumn level tracking

• SupportabilitySupportability Re-sync to restored Re-sync to restored

publisherpublisher Server Agent DiagnosticsServer Agent Diagnostics Server Agent StatisticsServer Agent Statistics

15 min summary15 min summaryPer client sync summaryPer client sync summary

Dr WatsonDr Watson

• OthersOthers Managed custom resolverManaged custom resolver Article OrderingArticle Ordering SQL 2K supportSQL 2K support Connection retry timeoutConnection retry timeout Compression levelCompression level

Performance – Database DesignPerformance – Database Design

• Smaller row lengthSmaller row length• Fixed and Variable length columnsFixed and Variable length columns• Key Length – SmallKey Length – Small• Normalization/DenormalizationNormalization/Denormalization• IndexesIndexes

Performance – QueriesPerformance – Queries

• Sub queries vs JoinSub queries vs Join• Parameterized QueriesParameterized Queries• Outer join – slow response Outer join – slow response • IndexesIndexes

What to indexWhat to index Selective IndexSelective Index Multiple Column IndexMultiple Column Index No index on small tablesNo index on small tables