enterprise application integration whatis it

7/28/2019 Enterprise Application Integration Whatis It

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Enterprise Application Integration


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Objectives

ODS Overview EAI concepts

EAI functional components


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Enterprise Application Integration

EAI began at Goldman Sachs in NewYork nearly 10 years ago, where theyfunded the Teknekron Information Bus(TIB) to pump stock market quotes into

different systems. The programmers who wrote Teknekron

then left and founded TIBCO.

Many of those same developers are nowwith Vitria.


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ODS

The operational data store (ODS) is a subject-oriented, integrated, current and volatilecollection of data used to support the tacticaldecision-making process for the enterprise.

Comparison ODS vs Data Warehouse:


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ODS

The ODS retains much less data than the datawarehouse

ODS data ages (loses its value) very quicklytypically in a few days


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ODS

The focus of the ODS is current transactions. ODS data is homogenous as compared with

the data warehouse


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ODS

ODS data is volitile; it is constantly updatedas transactions occur in operational systems


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Why build an ODS

Rationale is similar to that of Data Warehouse: Off load reporting and analysis functions from

operational systems.

Allow analysis of integrated data from across theenterprise:

Multiple web servers

Multiple order systems

Provides conformed data to users

Provides proper analysis tools to users

Facilitates sharing of value-added informationbetween business functions (ordering andmarketing)


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Enabling the ODS

The ODS relies on the receipt of data fromoperational sources in near-real time.

A class of information system, EnterpriseApplication Integration (EAI) can help.


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Enterprise Application Integration (EAI)

Provides the means to share data between differentapplications without writing custom interfaces.

Example: Consider a company that wants to do build an eCommerce

portal.

Has a number of legacy applications (or even an ERP solutionin place)

Need build the web-based eCommerce infrastructure and linkwith systems that do functions like process orders, manageinventory, ship products

The company decides to use a major courier service fordelivery of products ordered from the web site.

The company wants an ODS for analysis of transactions takingplace on the site


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Example

One solution custom Interfaces

Issues?

eComSite

Courier

Shipping

Inventory

OrderSystem

ODS


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Example

eComSite

Courier

Shipping

Inventory

OrderSystem

ODSEAI

Alternative employ EAI solution


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Advantages of EAI

Cost effectiveness Time to market

Scalability

Ability to deal with complex environments


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EAI Components

Business Rule Component: to allow theapplications to understand your businessprocesses

Business Logic Modules (i.e. supply planning,

sales order processing. Methods for businessprocess management.)

Transformation tools (to define how to map

data from one system to another)


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EAI Components

Data Acquisition Component: to allowaccess to the data Data Source and TargetInterfaces (i.e. Siebel, SAP, PeopleSoft, ODBC,Oracle, CICS, IMS) - note that the data

acquisition component is crucial to EAI success.Most vendors refer to these interfaces as"adapters"

Adapters understand the data structuresassociated with applications and the means bywhich to access the data. (SAP/ABAP)


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EAI Components

System Development Component: to allowprogrammers to design and test customrequirements - Design tools (for businessprocess design, debugging, and testing)


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EAI - Components

System Control Component: Should havethe following features:

Management tools (for application-specificmonitoring)

Directory tools (for locating other applications ondifferent platforms), particularly support for theLightweight Directory Access Protocol (LDAP)

Commitment control management mechanisms (for

control of business-level logical units of work) Strong support for metadata management


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EAI - Components

Message Brokers (to control transactions, controlsecurity, and perform event notification. Theproduct should also include the capability to"bridge" messages between different messagingsystems

Scalability for high-volume transaction throughput.It is almost impossible to know at implementationtime what the data volumes will be in the futuretherefore, EAI must be scalable.

Support for varying levels of fault tolerance, loadbalancing, and failover for mission-critical systems

Workflow enablement is a key requirement toreduce latency between distributed processes.


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Example

Save for Later (Computer Makers Web Store) Potential client goes to the web site and registers

Client then browses through products, placing inshopping cart.

If client decides not to buy at a point in time, canSave For Later keep the order for a period andcome back later to purchase.

Once a SFL transaction takes place, the

computer maker routes to an ODS, does someanalysis.


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Example

SFL data may be used in a variety of ways Customer may be sent an email

Transactions may be routed to call center for followup (with customer registration data email, phone,

etc) offer discounts, product information, etc.try to convince the customer to purchase.


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Example

How it works: Save for later transaction on the web causes

INSERT or UPDATE in certain DB tables

Trigger fires after INSERT or UPDATE and routes

data to EAI queue. EAI software reads the data in the queue does

some simple transformations (mapping of data inthis case) and forwards to ODS based on a set of

rules (some transactions are ignored, for example)

enterprise application integration whatis it

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