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Enterprise application integration
Outline
Enterprise Framework for application integration, integration of technology and services Which consists of a set of systems and enterprise-wide To enable application integration across middleware Formation.
For inventory and shipping management and supply chain management Application (), customer relationship management for current and potential customers Management Application () operation in the pattern of existing data from Find applications for business intelligence (), and applications Other types of programs (human resources data, health services, Internal communications and for managing such data), generally Unable to communicate with each other in order to share data or business Rules. For this reason, these applications often Seomyiragohapnida of automation or information silos. Communications Sean's lack of inefficiency, wherein the same data in multiple locations Is stored, lead, or simply can not process can be automated.
Enterprise application integration (EAI) with the one in These applications within an organization is the process of connecting Order to streamline business processes within the largest Automation, while at the same time an existing application or data Structure will avoid the need to make a big difference. In Word of the Gartner Group, EAI is an application or data associated with Source enterprise.1] in the data and business processes between Share nrestricted
One of the biggest challenges that require a variety of EAI systems Often in conjunction with other operating systems, connecting different databases Solutions and other computer language, is used in some cases, originally No longer supported by their vendors to create a legacy system Can. They consist of two components, because In some cases, these systems are "stovepipe systems," the Is a nickname to modify them in any way with the hard You have to be able to move in a way.
Improve connectivity
The integration of structured EAI approach, without If you apply a point-to-point connections grow across an organization. Dependencies are difficult to maintain the intricate improvisational chaos Is added as a result. This is typically called Spaghetti with Equivalent of spaghetti code programming implications. Yes For example:
The number of connection points-to-point connection, a fully meshed Have, n points are needed and will be given. Thus, Fully integrated applications for 10 points - to - point, Or even 45 points - to - point connection is required.
However, EAI is data sharing between applications is not just about Did; it is all business data and business processes Will focus on sharing. Analysts attending the EAI middleware Large inter-related system, a system of discipline problems reported Related, implemented at different levels in the distributed heterogeneous network Multiple systems.
The purpose of EAI
EAI is used for other purposes You can:
Data (information) integration: the multiple systems Obtain information consistency is maintained. This is also to Eli (Enterprise information integration) is known.
Vendor independence : An application to extract business policies or rules EAI system, so even if they implement a business Applications from other vendors as an application Changes that do not need to re-implement business rules.
General Facade is: EAI system could front-end applications Of a consistent approach to the cluster interface Provides other software applications and shielding users Package will need to interact with.
EAI Patterns
Integration Patterns
There are two patterns that EAI systems implement :
Adjustment
Between intermediaries or brokers (an interface or Communications) here in several applications, EAI systems role. Whenever an interesting event applications (eg, new Generated information, such as a new transaction completion) EAI systems integration Advice from the module occurs. Module, the radio and other related Changes to the application.
Association
In many applications In this case, the EAI system overarching appearance role. Across 'Some applications of the outside world' front EAI system Will be terminated. EAI system and basic application of the relevant information Interface is configured to expose the external world, and requester on behalf of all interactions with the default application To perform.
The two patterns are often used simultaneously. EAI systems can be maintained, such as multiple synchronization applications (Intervention), while external users for these applications (federation) in Service requests.
Access patterns
EAI supports both asynchronous And synchronous access patterns, and in arbitration cases before the federal case of the latter Is typical.
Lifelong pattern
Able to integrate a temporary job (For example, synchronization of the data in two applications Completed within the 2nd Wed) or long (for example, lived, one-step Wed EAI system, including interactions to be able to watch a few hours, It takes several days to complete the financing for the approval of the human Workflow application) is.
EAI Topologies
Two There are three main topologies: hub-and-, and stories Bus. Each has its own advantages and disadvantages. Hub-and-tell EAI system from the model center (hub) in and through the wedge Interact with the application. EAI systems in the bus model Bus (or that already exist, or message-oriented message bus Resident module is implemented as middleware.)
Technique
Composite Technology Each of the components of the EAI system used to implement:
Bus / Hub
This is typically a standard middleware products (application Strengthen the application server is implemented by message bus), or Stand-alone programs (ie, do not use any middleware To not implement), itself the role middleware.
Application connectivity
Bus / Hub application through a set of adapters (also Connector is also known) connection. In this way the base Know and interact with business applications programs. Adapter performs two-way communication, the hub for the application in Request a hub of interest and performances of the event in the application Occurs (inserting a new record, the transaction notification, etc.) have been completed. Adapter to the application specific (examples supplied applications Built on the company's client library), or Application of a class (for example, a particular, water, SOAP, or SMTP, such as Through standard communications protocols, along with all applications) Can interact. Adapter, the same process as the bus In the space / hub, or can be run from a remote location and Message queues, Web services, or proprietary protocols Such as using herbs and interactions with industry bus standards Protocol. In the Java world, standards such as the JCA adapter to allow the You can create a vendor-neutral manner.
Data Types And converted
All types of adapters for all other applications, EAI / to avoid having to convert data from the system Typically Applications (independent or common) data Type of regulation. EAI systems, as well as general applications 42 Conversion of certain data conversion services to help To provide a common format. This is done in two steps : Adapter, the application of the type common in the bus For more information about the type conversion. If so, this semantic change (Applies to convert an object into another application, an application of Programs / merge with the object name, zip code, split, Etc.).
Integrated Modules
EAI number of systems in multiple concurrent integration operations Be participating at any given time, each type of integration Are handled by different integrated modules. Integrated module in the event Join this event occurs when they receive a specific type and Process notifications. These modules are implemented in different ways Wed: Java-based EAI systems, these numbers or Web applications EJBs or even POJOs EAI system must comply with the specifications.
Transaction Support
When used for process integration, EAI systems are also transactions Provide a single overarching distributed transaction (protocol or transaction compensation Commit to using Phase 2 for all applications across all Application integration and consistency across runs).
Communication Architecture
Currently, the best model of the infrastructure components What do you think that a lot of configuration changes, and the Enterprise Is a standard structure for application integration. Coincidence that Four kinds of essential components of modern enterprise For application integration architecture seems to be:
Security A centralized broker to handle, access and communication. This Schools Interoperability Framework (SIF) Zone Integration Server), or such similar Through software integration server (you can perform through Is an enterprise service bus (but ESB) model, SOAP The central role of the service manager.
Independent data Models based on a standard data structure. It appears to XML The use of XML style sheets are not in fact justified, and if the standard de- Can.
Connectors or other representative of each vendor, the application Program or the interface of a component model You can build applications that it basically Currency and to communicate with the centralized broker.
API, Data flow and to define rules of engagement in the system, such as System model components in a standardized way to interface it Can be built.
Database or user interface Connect with other methods, such as at the level of exploration, but they Not found, or you can adjust the size. Individual applications The program has a central broker to post a message, that Subscribe to receive specific messages from the broker. Each application This requires a connection to the broker. This is the central Control methods can be very high scalability evolvable.
Enterprise Application integration technology, such as the message center Is related to middleware such as XML Middleware (MOM) and the data Expression technology. Other EAI technologies as a means of integrating a service-oriented As part of the architecture includes a Web service using. Corporate Application The number of data-centric application integration tend to. Close In the future, including content integration and business process Will come.
EAI implementation pitfalls
It's all in EAI projects 2003 failure was reported by 70%. Most of these errors, the software Its not due to technical problems or management issues Due. European Integration Consortium Chairman Steve Craggs seven weeks the ship company Using EAI system to describe the invasion, and these issues Provides a solution.
Continuous change
Very natural EAI is dynamic and dynamic project manager to manage the implementation of Should be.
Lack of EAI experts
A lot of problems with EAI Knowledge about the technical aspects is required.
Competing standards
EAI EAI standards within the field itself is a paradox that is not universal.
EAI is a tool paradigm
EAI is a tool, but rather System must be implemented, such as.
Building the interface Art is
Engineering solutions are not enough. Solution Users have to negotiate the final results of the department and the general Agreement is reached. Of consensus on interface design Excessive lack of effort and data requirements of various systems The map is connected between.
No loss
Information that does not matter In an earlier stage can be a great show later.
Responsibility
Many departments have many conflicting requirements, since Because there must be clear about the structure of the final liability of the system.
Another potential problem can occur in these areas :
Emerging Requirements
EAI to implement scalable and modular for future Changes are allowed for.
Protectionism
Who's data Often belong to other departments that integrate technology, applications, With other departments do not want to share their data for Cultural, and political reasons
Advantages and Disadvantages
Benefits
Real-time Between information systems approach
Streamline business processes and organization Help raise the efficiency
Of information across multiple systems Maintaining the integrity
Ease development and maintenance
Cons
And Small and Medium Enterprises (the SMB) specifically for the high initial development costs,
Just need a lot of money, or most of the EAI project manager Typically not willing to invest in point - to - point Efforts soon to manage a difficult start to envision Can not be over until the business of design applications Increase the number of
Future of EAI
EAI technologies are still under development, is still The ideal approach is no agreement or the right company Use of the technology group. The open and common pitfalls Claims, but expandable to create vendor lock-ons The other is to use proprietary technology.
Reference
Business Semantics Administration
Comparison of business integration software
Data Integration
Enterprise Information Integration
Enterprise Integration
Enterprise Integration Patterns
Enterprise Service Bus
Generalised Enterprise Reference Architecture and Methodology
Integration Appliance
Integration Competency Center
Integration platform
Straight Through Processing
System Integration
Businesses and organizations
Health Level 7
Open knowledge Initiative
The OSS through Java
Schools Interoperability Frame Framework (SIF)
Commercial Solutions
Avolution
Axway
FRENDS iron - "Frends" in technology Iron Page FRENDS
IBM's WebSphere Message Broker
iBOLT
Integration Objects
Organized
Although the IONA Artix ESB technology
Microsoft Microsoft and BizTalk Server - "Microsoft and BizTalk Server" on page
MOND technology
Oracle Service Bus (BEA AquaLogic Service Previous bus)
Oracle BPEL Process Manager
Pervasive Software
Progress software
Reconfigurable Computing Environment
The Software AG webMethods
Softshare
Sterling Commerce
Sun Java CAPS
TIBCO
Open Source Projects
Apache ActiveMQ
Apache Camel
Apache ServiceMix
Apache Synapse
Although FUSE ESB (enterprise ServiceMix)
FUSE Adjustment Router (enterprise Camel)
FUSE Message Broker (enterprise ActiveMQ)
Jitterbit integration server
MuleSource
Openadaptor
OpenESB
Although petal ESB
Spring Integration
Talend
Great Universal Server
References
AIIM International for ^ Report in April 2001, "Enterprise Applications: Adoption of e - business and technical documents, 2000-2001: the world of industry Research, "Gartner data between applications and the associated Unlimited sharing of business processes "and to define EAI Corporate data sources. "
Gable, Julie (March / April 2002). "Large Enterprise Application Integration. "Journal of Information Management. Http://findarticles.com/p/articles/mi_qa3937/is_200203/ai_n9019202. Retrieved 2008-01-22.
^ Trotta, Gian (December 15, 2003). "EAI 'dancing around Bear trap '". Http://www.ebizq.net/topics/int_sbp/features/3463.html. Address June 27, 2006.
Categories : Enterprise application integration About the Author
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