Service Oriented
Architecture for Mobile
Applications
Swarupsingh Baran
University of North Carolina Charlotte
What do we have today?
► Service
Oriented Architecture for Mobiles
► SAP SOA for Mobile Applications
► Microsoft Dynamics CRM (SOA Framework)
► Microsoft Mobile CRM
► CWR Mobile CRM
Service Oriented Architecture
►A
set of components which can be invoked, and
whose interface descriptions can be published and
discovered - W3C.
► The
policies, practices, frameworks that enable
application functionality to be provided and
consumed as sets of services published at a
granularity relevant to the service consumer.
(CBDI)
A Service Characteristic
► Services
are typically constructed in the
following four tiers:




Interface
Business process facade
Business rules
Data access
Today’s Mobile Applications
► Field
Service Automation
► Fleet Management
► Asset Management and Tracking
► Mobile CRM
Problems Faced
► Unlike
the Desktop counterparts, limited
processing power as far as Mobiles are
concerned.
► Limited bandwidth and connectivity.
► Offline / Online connection nature of the
devices.
► Insufficient data storage resources.
Solution – SOA for Mobile Applications
► Lightweight
mobile SOA architecture.
► Allow business processes to be executed on
the mobiles.
► Service based communication mechanism.
► Allow disconnected access to Enterprise
Architecture
and Business Enterprise
Objects.
SOA Architecture by SAP
► Features
 Lightweight and a framework which minimizes
the data transferred to and stored on the
devices by using knowledge of business process
and data access.
 Highly compressed XML format to transfer and
store data.
 SOAP message compression.
 Pro-active loading of data from server.
 Asynchronous connectivity to back-end system.
Business Data Delivery
► Business
Object – An entity of significance
to a business model which acts as a service
provider and also a service consumer.
► Data pruning and partial copies of business
objects needed for mobile clients.
Mobile Architecture
Mobile Architecture
► Features
 Uses RDF documents to transmit business
objects to the client side, making it light weight.
 Pre-deployment knowledge of business object
data structure and usage along with occurrence
statistics.
 On demand data exchange is performed for
long offline periods.
Mobile Architecture
► Features
 Consists of Core Services and Composite
Services.
 Mobile client is a set of OSGi components
exposing their functionality as services
published in OSGi registry.
Mobile Architecture
► Security
Features and Considerations
 Asymmetric key encryption scheme works very
slowly on mobile phones.
 Asymmetric encryption to be used only for most
sensitive information.
 Symmetric key encryption for all other
information.
Mobile Architecture
► Pro-Active
Data Feeding
 Analyze user transaction patterns and collect
statistics to store them in user profiles.
 Client demand forecast method for predicting
use of next business objects/operations by
client.
 Push relevant information as much as possible
to client when the connection is active.
Is that all?
Microsoft is never behind!!
Microsoft Dynamics CRM
►A
Service Oriented, fully integrated customer
relationship management (CRM) system.
► Marketing: A clearer view of customers and more
informed marketing investments
► Sales: Get more leads and close more business
► Customer service: Provide more value to
customers
Microsoft Dynamics CRM - Architecture
Microsoft Dynamics CRM
Applications?
► The
true test of whether an architecture is
feasible is when an application is built on it.
► However we do not have any application on
this framework by SAP 
► We do have Microsoft Mobile CRM!!
Microsoft Mobile CRM
► Statistics
 Completely developed in C#.
 Has 150K lines of code, ~40KB on Pocket PC with .NET
Compact Framework.
 Includes metadata-driven business logic, user interface,
and message schemas.
 Has 4 SQL CE databases, ~40 tables. Transactions
coordinated across databases. Schemas updated on the
fly when metadata changes.
 Uses Web services and asynchronous messaging built
on SQL CE RDA Protocol.
Microsoft Mobile CRM
► Features
 Ability to work either in a connected or disconnected
mode.
 CRM Mobile is easy to use, customize, and maintain.
 Offers users rich account and opportunity management
functionality
 Provides salespeople with up-to-date information about
their accounts and contacts, and helps them manage
sales opportunities and track sales-related activities.
Microsoft Mobile CRM
CWR Mobile CRM
► CWR
a firm based out of Netherlands
specializing in developing mobile solutions
for business applications
► A powerful CRM application built on top of
Microsoft Dynamics CRM which is a SOA and
Metadata driven rich CRM framework.
► Application
Questions?