Web Services contribution to Service-Oriented Architecture

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Web Services contribution to Service-OrientedAr
chitecture
2006 Symposium on Justice andPublic Safety
Information Sharing

• Gerry Coleman

Crime Information Bureau coleman_at_doj.state.wi.us
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• Web Services (protocol)
• A collection of Services
• A user interface
• Network design
• Distributed data
• Federated identity

Architecture
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Simple Application
Mainframe Technology
Data
COBOL Application (computer program)
User
OS
The user has a dumb terminal and dedicated
connection to the mainframe. Protocol is 3270
poll/select, Burroughs poll/select, maybe 8A1.
There is a tightly coupled, (in house?)
relationship between an application and data
Classic Architecture
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Simple Application
Internet Technology
Data
Java Application (computer program)
User
Application Server
Usually, the user has a Browser, HTTP
Protocol, HTML screen display. Link to mainframe
is public or private.
There is a tightly coupled, (in house?)
relationship between an application and data
Classic Architecture
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Introduce WebServices (protocol)
Application (computer program)
Application (computer program)
User
Data
The connection between a user and an application
is HTTP
The users application is using WebServices to
obtain data from another application.
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What is a SERVICE ?
Technical Components

• Server and clients
• Input/Output
• Application Program(s)
• Database (information)
• Data maintenance (input, update, archive)
• Inquiry
• Reports

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What is a SERVICE ?
Business Components

• Limited set of users
• Limited business purpose
• Specialized domain of information
• Geographically restricted
• Budget constraints
• Fixed set of operational features

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Service Consumer
A service is a classical, simple data system
engineered to have server-to-server I/O using
WebServices protocol.
Service Provider
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A collection of SERVICES
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Service Architecture
Data Application
Data Application
User Application
Data Application
Data Application
Browser
Data Application
Data Application
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Server to Server
Application (computer program)
Application (computer program)
Data
Web Services Interface
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Server
Server
Microsoft .NET (application server)
IBM WebSphere (application server)
Application (computer program)
Application (computer program)
Web Services Interface
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Technical Specifications

• Web Services Description Language (WSDL)
• Web Services Policy Framework
• Web Services Dynamic Discovery
• Web Services Metadata Exchange
• Web Services Endpoint Language

See http//www.service-architecture.com
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Network Bus (elec.)
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FederatedIdentity
Domain A
Trust
Security Assertions Markup Language
Shibboleth, or Liberty Alliance
Domain B
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To Do . . .

• Every data source needs a Web Services,
  server-to-server I/O interface
• Standardize reference documents (I/O transaction
  content)
• Redefine networks to bus architecture
• Establish federated identity management

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