Chapter 5 notes - -Among the most important elements in any...

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--Among the most important elements in any organization's information systems, whether those systems deal with accounting information or other information that managers use to make decisions, are the data describing these events that are stored in those systems. --Business event data are captured to describe the who, what, where and when about that event --Two types of business event processing: Application approach and centralized database approach (aka the database approach) The Applications Approach to Business Event Processing Applications approach to business event processing view : concentrates on the process being performed --data play a secondary or supportive role to the programs that run in each application system. --Under this approach, each application collects and manages its own data, generally in dedicated, separate, physically distinguishable files for each application --A major consequence of the applications approach is data redundancy Data Redundancy: data stored in multiple locations, occurs among various files --this redundancy increases labor and storage costs --The worst consequence of using the applications approach is that the redundant data stored in multiple files can become inconsistent when information is updated in one file and not in other files where it also resides The Centralized Database Approach to Business Event Processing Centralized database approach: facts about events are stored in relational database tables instead of separate files --Solves many of the problems caused by data redundancy --The use of databases has improved the efficiency of processing business event data by eliminating data redundancies and improving data integrity --The big thing that databases have helped make possible is the creation of integrated business information systems that include data about all of a company's operations in one massive collection of relational tables Database Management Systems Database Management System: a set of integrated programs designed to simplify the tasks of creating, accessing and managing a database.
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This note was uploaded on 02/12/2012 for the course BT 1003 taught by Professor As during the Spring '11 term at American Jewish University.

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Chapter 5 notes - -Among the most important elements in any...

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