Business Integration Layer.ppt

1、1,Business Integration Layer,This layer provides the glue to provide end-to-end processing and also a range of value-added services Basic connectivity is provided by communications middleware such as messaging (- eg, using message queues) and COM/DCOM and CORBA object mechanisms. There may also be d

2、irect calls to - eg, CICS transactions. The layer will need to support both batch (- eg, FTP) and transactional processing. Depending upon need value added services will include aggregation of data (- eg, two incoming transactions are combined into one outgoing), data splitting (- eg, one incoming t

3、ransaction becomes many outbound) and data transformation whereby the incoming data is transformed according to business rules (- eg, arithmetic operation, look-up table, reformatting etc). More sophisticated products will provide rules based workflow type functionality which prioritise transactions

4、 based upon content and control the overall flow of data across the virtual organisation. In addition, directory services to locate resources across the network, audit trail facilities and management tools such as message repair functionality may be required The capability of the business integratio

5、n layer that is required will vary depending on the individual situation and will not necessarily contain all of the above. However it is likely that a number of products will be required in order to provide the necessary services ranging from relatively simple connectivity tools to full blown EAI p

6、roducts that are increasingly becoming sophisticated development environments in their own right.,Customer Interaction Layer,Enterprise Management Systems,Partner Management Systems,Customer Analytics Marketing & MIS,Operational Customer Management,Business Integration Layer,Production Engine Layer,

7、Channel Management Layer,Channel Layer,Marketing & Payment Gateways,2,Architecture Template - Service Layers,Interfaces like VB, HTML, WML, Java Applets,Service APIs. Functionality provided that clients can call. Provided by means of Distributed Objects, HTTP CGIs, Servlets, or other technology,Busi

8、ness Logic. Sequence of steps and service calls that implements a particular functionality made available at the above layer,Presentation Layer,Public Interface Layer,Transaction Layer,Data Source Layer,OS/Network Layer,Transport Services,Security Services,Source and destination of data used and cre

9、ated by the Transaction Layer. Business data and Logs belong here,Technology support. Web Servers, Application Servers, Directory Servers, Mail Servers, ORBs, Operating Systems, Firewalls, etc,Security Services provided all along the stack, from programmed application access control (ex:login) to Op

10、erating systems logs and PKI infrastructures.,Protocols used to glue all layers. CORBA, DCOM, MQSeries, MSMQ, LDAP, HTTP, OracleNet, etc,VB Application on Call Centre Workstation,Description,Example,Banking system: Open Account, Close Account, Check Balance, View Statement,Make Transfer,Transfer Mon

11、ey op: Check accounts, check balance of source account, credit amount if available, update databases and balances,Banking system: Customer Database, marketing databases, Product Information, etc,Oracle 8i, Netscape Enterprise Server, Microsoft IIS, PeerLogic i500 Directory Server, Inprise Visibroker

12、, Iona ORBIX, Windows NT, Solaris, etc,3,Presentation Layer,Collects information from layer bellow and transforms it into client-specific formats (ex: HTML or WAPs WML) Collects information from client (ex: Web browser, VB application or IVR) and delivers it to Layer bellow. Allows TOTAL independenc

13、e between form and function. Multiple clients can access the same functionality.,Presentation Layer,Public Interface Layer,Transaction Layer,Data Source Layer,OS/Network Layer,Transport Services,Security Services,Example: VB Application on Call Centre Workstation,4,Public Interface Layer,APIs - Appl

14、ication Programming Interfaces. Filters non-public functionality from improper use. Provides constant public interface regardless of particular implementation of functionality. Uses layers bellow to implement functionality,Example: Banking system- Open Account, Close Account, Check Balance, View Sta

15、tement,Make Transfer,Presentation Layer,Public Interface Layer,Transaction Layer,Data Source Layer,OS/Network Layer,5,Transaction Layer,Business Logic - Implements functionality provided in the upper layer. Possibly is client of other services in the same or in different network nodes. Co-ordinates

16、different activities to present the upper layer with reliable service Hides implementation issues from the above layer thus promoting upgrading and implementation independence.,Example: Transfer Money op - Check accounts, check balance of source account, credit amount if available, debit amount from

17、 source account, update customer databases, log events, etc,Presentation Layer,Public Interface Layer,Transaction Layer,Data Source Layer,OS/Network Layer,6,Data Source Layer,More a logic concept that an infra-structure concept. Data repository for the service. Databases, Tables, Entity-Relationship

18、 schemes, etc Can be made of distributed sources, and database systems not necessarily in the same network node.,Example: Banking system- Customer Database, marketing databases, Product Information databases, MIS databases, etc,Presentation Layer,Public Interface Layer,Transaction Layer,Data Source

19、Layer,OS/Network Layer,7,OS/Network Layer,Enabling technologies, Operating Systems and Networks supporting the service.,Example: Oracle 8i, Netscape Enterprise Server, Microsoft IIS, PeerLogic i500 Directory Server, Inprise Visibroker, Iona ORBIX, Windows NT, Solaris, Cisco PIX, Firewall-1, etc,Pres

20、entation Layer,Public Interface Layer,Transaction Layer,Data Source Layer,OS/Network Layer,8,Security Services,Access control Authentication and Encryption Logging & Non-Repudiation Control Audit Provided by different nodes in the network: Service being accessed, Directory Servers, Databases, Firewa

21、lls, Routers, etc,Example: Programmed logging (client and server side), Access Control Lists, Digital Certificates, Entrust PKI, Baltimore UniCert, Firewalls, Operating System Security and Audit Services, etc,Presentation Layer,Public Interface Layer,Transaction Layer,Data Source Layer,OS/Network La

22、yer,Transport Services,Security Services,9,Transport Services,Provides accessibility framework for the service. Includes messaging middleware (MSMQ, MQ Series), distributed objects architectures (CORBA/IIOP, DCOM) and Comms protocols (HTTP, LU 6.2) Can include local and remote database drivers (Orac

23、le-Net, ODBC),Example: CORBA, DCOM, MQSeries, MSMQ, LDAP, HTTP, OracleNet, ODBC, etc,Presentation Layer,Public Interface Layer,Transaction Layer,Data Source Layer,OS/Network Layer,Transport Services,Security Services,10,Practical Example,1. The Web server receives a request for “Check Balance”. 2. A

24、t a very low level, security checks are made (ex: digital certificate validation) 3. At the API layer data is collected from the HTTP protocol request. 4. At the Transaction Layer this service executes: Updates on his own data source layer (ex: logs) Queries on campaign service (ex: E-piphany ) Stor

25、es user info on a CRM Service (ex: Siebel) using COM Requests “Balance” service from financial service suit (ex: Brokat) using its API layer with, for instance, CORBA 5. Receiving the results of all the steps taken in the Transaction Layer, info is sent to the Presentation Layer to be formatted in a

26、ccordance to user specific environment (ex: Netscape 4.0 Web Browser on NT, or XML for other distribution channels). 6. At all stages, whenever communications take place, security procedures may be executed (ex: at the network layer, can that machine send data to this machine, at all?) 7. When the F

27、inancial Service Suit receives the request at the API level, it passes execution to the transaction layer. Here it may update other areas of the CRM service, update its own data sources (ex: logs) and request the service itself to the core banking system using, for instance, MQ Series). 8. And so on

28、.,Web Service (- eg, Vignette on Netscape Server),Financial Service Suite (- eg, Brokat),Core Banking Sys (- eg, Fiserv),Campaign Service (- eg, E-Piphany),CRM Service (- eg, Siebel),11,IBM- MQ Series / MQSI Neon- MQ Integrator BEA- Tuxedo / MessageQ Candle- Roma Deluxe- eFunds Architect TSI- Mercator Tibco- TIB/Active Enterprise Microsoft- MSMQ Iona-