Chapter 1 - Part I: Introduction The term Enterprise...

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Part I: Introduction The term Enterprise Architecture refers to a collection of technology components and their interrelationships, which are integrated to meet the information requirements of an enterprise. This section introduces the concept of Enterprise IT Architectures with the intention of providing a framework for the various types of technologies used to meet an enterprise's computing needs. Data warehousing technologies belong to just one of the many components in an IT architecture. This chapter aims to define how data warehousing fits within the overall IT architecture, in the hope that IT professionals will be better positioned to use and integrate data warehousing technologies with the other IT components used by the enterprise.
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Chapter 1. The Enterprise IT Architecture This chapter begins with a brief look at how changing business requirements have, over time, influenced the evolution of Enterprise Architectures. The Info Motion ("Information in Motion") Enterprise Architecture is introduced to provide IT professionals with a framework with which to classify the various technologies currently available. The Past: Evolution of Enterprise Architectures The IT architecture of an enterprise at a given time depends on three main factors: the business requirements of the enterprise; the available technology at that time; and the accumulated investments of the enterprise from earlier technology generations. The business requirements of an enterprise are constantly changing, and the changes are coming at an exponential rate. Business requirements have, over the years, evolved from the day-to-day clerical recording of transactions to the automation of business processes. Exception reporting has shifted from tracking and correcting daily transactions that have gone astray to the development of self-adjusting business processes. Technology has likewise advanced by delivering exponential increases in computing power and communications capabilities. However, for all these advances in computing hardware, a significant lag exists in the realms of software development and architecture definition. Enterprise Architectures thus far have displayed a general inability to gracefully evolve in line with business requirements, without either compromising on prior technology investments or seriously limiting their own ability to evolve further. In hindsight, the evolution of the typical Enterprise Architecture reflects the continuous, piecemeal efforts of IT professionals to take advantage of the latest technology to improve the support of business operations. Unfortunately, this piecemeal effort has often resulted in a morass of incompatible components. The Present: The IT Professional's Responsibility
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This note was uploaded on 02/09/2012 for the course COMPUTER S a303 taught by Professor None during the Spring '11 term at BEM Bordeaux Management School.

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Chapter 1 - Part I: Introduction The term Enterprise...

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