Introduction To .Net Compact Framework and SQL Server CE Development

Introduction to .NET Compact Framework Development Mobile Data Synchronisation Techniques

Who Am I?

Microsoft Most Valuable Professional

Agenda
Why?
Application Development
Mobile Data Storage
Data Synchronisation
Helpful Resources

The Device Landscape Windows Mobile, Pocket PC, SmartPhone, Windows CE Windows XP, Windows Vista, Windows XP Embedded Remote Controls , Wearable Devices, Auxiliary Displays Increasing functionality .NET Micro Framework .NET Compact Framework .NET Framework

.NET Compact Framework
30% functionality in 10% space
X86, ARM, SH4, MIPS….
Compatible Base Class Library
Bring .NET to devices Performance and Tools Distributed and Data based apps

Windows Mobile History
WinPad and Pulsar projects
Pegasus Group formed
H/PC reference design
Componentised Operating System

Typical Device Specifications Professional 200 – 700 Mhz 32 – 128 MB 128 MB Yes 240 x 320 Standard 100 – 300 Mhz 16 - 64 MB 64 MB No 176 x 220 Processor RAM ROM Touch Screen LCD Resolution

Development Constraints
Minimal resources
Limited input
Touchscreen
No kitchen sink style apps

DEMO Smart Device Hello World Application Development

Why mobilise an application?
Distributed work forces
Competitive advantage
Unlock potential of existing data

Rich vs Thin Clients
Frequent round trips
Requires connectivity
Limited controls
Easy deployment
AJAX and Silverlight

Occasionally Connected
Addressability and identity
Dynamic IP addresses
Outbound only TCP and HTTP
Quality of service
Assume you are always offline
Need store-and-forward solution

Network Aware
A dynamic network environment
Cost vs Priority decisions
Periodic background network checks
Notifications and connection status
Adaptive application behavior

SQL Server Benefits Large data source Data is always fresh Rich query capability Limitations Constant connection Scalability (two tier) Query speed .NET Compact Framework ADO.NET Windows Forms SQL Server

SQL Server CE Benefits Local Cache Distribution Size Query Speed Limitations Simpler Data Types Stale Data Sync Complexity .NET Compact Framework ADO.NET Windows Forms SQL Server

SQL Server CE
SQL Server Compact Edition 3.5
SQL Server CE
SQL Server Mobile
SQL Server Everywhere
SQL Server Anywhere

Design Philosophy
Supports desktop and mobile platforms
In-process database engine
Minimal duplication
Strong security

Compact vs Express

Deployment
CAB for PDA
MSI for desktop
XCOPY style deployment for “non admin” installs…

Tool Support
SQL Server 2005 Compact Edition
Visual Studio 2005
SSMS 2005
SQL Server Compact Edition 3.5
Visual Studio 2008
SSMS 2008

Special Features
SqlCEResultset
Remember classic ADO?
Scrollable, Updateable, Sensitive cursor into server side resultset
CommandType.TableDirect
Bypass the query processor entirely

Optimisation Techniques
No connection pooling
Specify data types within parameterised queries
Query plan recompilation
Performance Monitoring
XML Query Plan Generation
Index Stored Procedures!?!
sp_show_statistics

DEMO SQL Server CE Optimisations

Data Syncronisation
Technologies
Merge Replication
Remote Data Access
Web Services
Email?
Can be complimentary based upon requirements of individual data sets

Remote Data Access (RDA)
Client (PDA) Initiated
Pulls one table at a time
Device-only change tracking (identity columns problematic)
Application submits SQL statement to SQL Server for execution
Minimal configuration

Merge Replication
Publisher (Server) Initiated
Publications can filter data Horizontally and/or Vertically
Bi-directional change tracking
Row or Column based
Configurable conflict resolution

Web Services
Abstract the database away from the messaging
Disconnected Service Agent
Windows Communication Foundation
Store and Forward Messaging
Leverage ActiveSync AUTD feature and Exchange 2007 Web Services

ADO.NET Sync Services
Uses webservices to syncronise changes
Framework of “building blocks”
Not yet available for PDA use
“ Developers can build sync ecosystems that integrate any application, any data from any store using any protocol over any network”

Hybrid Pattern Disconnected Service Agent Submit new and changed data to server via web service call 2 Mobile Data Gateway Merge/Replication Download reference, read-only data 1 Mobile Data Update Tables on Mobile SQL Server database updated 3

MCTS Exam 70-540
Mobile LOB Accelerator
Microsoft Mobile Development Handbook
Windows Mobile Data Synchronization with SQL Server 2005 and SQL Server Compact 3.1
Finding out more

Contact Information Christopher Fairbairn ARANZ Medical Ltd Questions? Email: [email_address] Website: www.christec.co.nz/blog/

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Introduction To .Net Compact Framework and SQL Server CE Development

by christopherfairbairn on Jul 06, 2008

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Introduction To .Net Compact Framework and SQL Server CE Development — Presentation Transcript