This document is created with the unregistered version of CHM2PDF Pilot in .NET framework

Encoder QR Code 2d barcode in .NET framework This document is created with the unregistered version of CHM2PDF Pilot
This document is created with the unregistered version of CHM2PDF Pilot
Create Quick Response Code In Visual Studio .NET
Using Barcode printer for VS .NET Control to generate, create QR Code ISO/IEC18004 image in .NET applications.
This document is created with the unregistered version of CHM2PDF Pilot
QR Code Reader In .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
This document is created with the unregistered version of CHM2PDF Pilot
Barcode Printer In .NET
Using Barcode creator for .NET framework Control to generate, create bar code image in Visual Studio .NET applications.
Service-Oriented Architecture
Scan Bar Code In .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
This section introduces the major concepts and definitions for services and SOA
Print QR Code 2d Barcode In C#.NET
Using Barcode drawer for .NET Control to generate, create QR Code image in .NET framework applications.
What Are Services
QR Printer In .NET
Using Barcode creation for ASP.NET Control to generate, create QR Code ISO/IEC18004 image in ASP.NET applications.
Before we continue to discuss technology, let's discuss the notion of services and processes from a business perspective Most organizations (whether commercial or government) provide services to customers, clients, citizens, employees, or partners Let's look at an example of service orientation in practice As illustrated in Figure 1-4, bank tellers provide services to bank customers Different tellers may offer different services, and some tellers may be specifically trained to provide certain types of services to the customer Typical services include:
QR-Code Encoder In Visual Basic .NET
Using Barcode generation for VS .NET Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
Figure 1-4 Service analogy at the bank
GS1 - 13 Creator In .NET
Using Barcode creation for .NET Control to generate, create European Article Number 13 image in VS .NET applications.
Account management (opening and closing accounts) Loans (application processing, inquiries about terms and conditions, accepting payments) Withdrawals, deposits, and transfers Foreign currency exchange Several tellers may offer the same set of services to provide load balancing and high availability What happens behind the counter does not matter to the customer, as long as the service is completed Processing a complex transaction may require the customer to visit several tellers and therefore implement a business process flow
Making Bar Code In VS .NET
Using Barcode drawer for .NET Control to generate, create barcode image in .NET applications.
This document is created with the unregistered version of CHM2PDF Pilot
Printing ECC200 In .NET Framework
Using Barcode drawer for .NET Control to generate, create Data Matrix image in .NET applications.
This document is created with the unregistered version of CHM2PDF Pilot
Generate UCC - 12 In .NET Framework
Using Barcode generation for .NET Control to generate, create UPCA image in Visual Studio .NET applications.
This document is created with the unregistered version of CHM2PDF Pilot
ISBN - 13 Printer In VS .NET
Using Barcode creation for .NET framework Control to generate, create International Standard Book Number image in .NET applications.
SOA and Web Services
UPC Code Recognizer In Visual Studio .NET
Using Barcode recognizer for .NET Control to read, scan read, scan image in .NET framework applications.
The major advantages of implementing an SOA using Web services are that Web services are pervasive, simple, and platform-neutral As shown in Figure 1-6, the basic Web services architecture consists of specifications (SOAP, WSDL, and UDDI) that support the interaction of a Web service requester with a Web service provider and the potential discovery of the Web service description The provider typically publishes a WSDL description of its Web service, and the requester accesses the description using a UDDI or other type of registry, and requests the execution of the provider's service by sending a SOAP message to it The basic Web services standards are good for some SOA-based applications but are not adequate for many others
Encode Code39 In Java
Using Barcode maker for Java Control to generate, create Code 39 image in Java applications.
Figure 1-6 Basic Web services architecture
UPC-A Maker In Java
Using Barcode encoder for Java Control to generate, create UPC Code image in Java applications.
Why UDDI Is Not a Core Web Services Specification
Making Code 128 Code Set C In C#.NET
Using Barcode printer for Visual Studio .NET Control to generate, create Code 128 Code Set A image in Visual Studio .NET applications.
It's safe to say that the original vision of UDDI has not been realized When UDDI was launched in late 2000, it was intended to become a public directory Companies were supposed to register their Web services with UDDI, and other companies were to come along later and dynamically discover the services they needed to access over the Internet The assumption, which has not proven true, was that companies would be interested in discovering and requesting services from providers with whom they had no prior relationship Also UDDI was developed before WSDL, so initially WSDL was not well supported The data structures proved to be problematic because they are so open-ended with very little required information and a structure based on categorization data that isn't universally recognized UDDI was also positioned as an inside-the-enterprise technology, and here it has gained some measure of success; however, the standards remain incomplete for this purpose Companies adopting UDDI for internal use have to define their own naming conventions and categorization structure and metadata, which inhibits adoption While SOAP and WSDL have gone on to tremendous success and widespread adoption, UDDI still struggles to find its proper place in the Web services universe It is clear that a service registry is a required part of the Web services platform, but it isn't clear that UDDI will ever truly become that solution
Making Barcode In Visual Basic .NET
Using Barcode generation for .NET framework Control to generate, create barcode image in .NET applications.
This document is created with the unregistered version of CHM2PDF Pilot
Barcode Generation In Java
Using Barcode drawer for Java Control to generate, create barcode image in Java applications.
This document is created with the unregistered version of CHM2PDF Pilot
Bar Code Maker In .NET
Using Barcode creation for ASP.NET Control to generate, create barcode image in ASP.NET applications.
This document is created with the unregistered version of CHM2PDF Pilot
Print Bar Code In .NET
Using Barcode maker for ASP.NET Control to generate, create bar code image in ASP.NET applications.
Rapid Integration
A few years ago, businesses finding themselves in need of comprehensive integration solutions turned to products and practices developed specifically for that purpose However, these enterprise application integration (EAI) products proved to be expensive, consumed considerable time and effort, and were subject to high project failure rates Furthermore, because these various special purpose products are proprietary, many of the projects resulted in additional difficulties whenever a company invested in more than one of them Recent experience shows that a better answer is available by using Web services standards Instead of dealing with the complexity of multiple incompatible applications on multiple computers, programming languages, and application packages by introducing an EAI product, it's possible to add a layer of abstraction that's open, standards-based, and easy to integrate with virtually any new and existing environment A new generation of integration products from BEA, IBM, IONA, Microsoft, SAP, SeeBeyond, Systinet, Tibco, WebMethods, and others, enabled by Web services technology, is emerging around the concepts of service-oriented integration The combination of Web services and SOA provides a rapid integration solution that more quickly and easily aligns IT investments and corporate strategies by focusing on shared data and reusable services rather than proprietary integration products To illustrate the benefits of service-oriented integration, consider the example of three fairly typical financial industry database applications, perhaps supporting retail banking, commercial banking, and mutual fund investment operations The applications were developed using a classic three-tier architecture, separating presentation logic, business logic, and database logic As shown in Figure 1-8, it's possible to reuse a traditional three-tier application as a service-oriented application by creating services at the business logic layer and integrating that application with other applications using the service bus Another benefit of service orientation is that it's easier to separate the presentation logic from the business logic when the business logic layer is service-enabled It's easier to connect various types of GUIs and mobile devices to the application when the business logic layer is service-enabled than if a separate tightly coupled presentation logic layer has to be written for each Instead of running the presentation logic tier as a tightly coupled interface on the same server, the presentation logic can be hosted on a separate device, and communication with the application can be performed using the service bus
Figure 1-8 Designing for service-oriented integration [View full size image]