Fifth Edition 1 M a n a g e m e n t I n f o r m a t i o n S y s t e m s M a n a g I n g I n f o r m a t i o n T e c h n o l o g y i n t h e E – B u s i n e s s E n t e r p r i s e Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. C h a p t e r James A. O’Brien 13 Data Resource Management

Fifth Edition James A. O’Brien 2 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Explain the importance of data resource management to an organization, and how it can be implemented by database management, database administration, and data planning activities. Outline the advantages of the database management approach to managing the data resources of a business. Explain how database management software helps business professionals and supports business operations and management of a business. Chapter Objectives

Fifth Edition James A. O’Brien 3 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Provide examples to illustrate each of the following concepts: –Major types of databases –Data warehouses and data mining –Logical data elements –Fundamental database structures –Database access methods –Database development. Chapter Objectives

Fifth Edition James A. O’Brien 4 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Logical Data Elements Employee Record 2 Employee Record 1 Employee Record 3 Employee Record 4 NameSSSalaryNameSSSalaryNameSSSalaryNameSSSalary Data Personnel Database Payroll File Benefits File

Fifth Edition James A. O’Brien 5 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Operating System Database Management System Application Programs Operating System Database Management System Application Programs Databases Data Dictionary Database Management Database Development Database Interrogation Database Maintenance Application Development Database Management Systems

Fifth Edition James A. O’Brien 6 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Network Server Network Server External Databases on the Internet & Online Services Client PC or NC Operational Databases of the Organization Data Mart End User Databases Data Warehouse Distributed Databases on Intranets & Other Networks Major Types of Databases

Fifth Edition James A. O’Brien 7 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Data Warehouse and Data Mining Client PC or NC Analytical Data Store Enterprise Warehouse Data Mart Data Acquisition Subsystem Warehouse Design Subsystem Data Management Subsystem Data Access and Delivery Subsystem Data Access and Delivery Subsystem Web Information System Web Information System Operational Databases Metadata Directory Metadata Repository Metadata Management Subsystem

Fifth Edition James A. O’Brien 8 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Web-Based Systems Web Browser Web Server Software Web Server Software Network Server The Internet Intranets Extranets Client PCs or NCs HTML pages GIF image files Video files Web Objects

Fifth Edition James A. O’Brien 9 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Data Resource Management Data Administration Data Planning Database Administration

Fifth Edition James A. O’Brien 10 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Database Structures Employee 2 Employee 2 A Empno EnameEtitle Dept 1 2B 3C Relational Structure Network Structure Hierarchical Structure Employee 3 Project B Project A Dept DnameDlocDmgr A B C Employee 2 Employee 1 Project A Employee 1 Dept A Dept B Dept Project B

Fifth Edition James A. O’Brien 11 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Database Structures (cont) East West Denver Feb Actual Budget Margin SalesTV VCR TV VCR Multidimensional Database Structure Attributes Customer Balance Operations Deposit Withdraw Bank Account Object Attributes Credit Line Mthly Statement Operations Calculate Interest Print Mthly Statement Checking Account Object Attributes Credit Line Mthly Statement Operations Calculate Interest Print Mthly Statement Savings Account Object Object-Oriented Database Structure

Fifth Edition James A. O’Brien 12 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Key Fields Sequential Access Sequential Organization Indexed Sequential Access Method Key Transformation Direct Access URLs Accessing Files and Databases

Fifth Edition James A. O’Brien 13 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Database Development User Needs Description User Needs Description 1. Data Planning Enterprise Model 2. Requirements Specifications 2. Requirements Specifications 3. Conceptual Design 4. Logical Design Physical Models 5. Physical Design Data Models Logical Models

Fifth Edition James A. O’Brien 14 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Data resource management is a critical management activity. Management roles include database administration, data planning, and data administration. Under the database management approach, data records are consolidated into databases that can be accessed by many different application programs, serving multiple users. Chapter Summary

Fifth Edition James A. O’Brien 15 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Database management systems are software packages that simplify the creation, use, and maintenance of databases. Several types of databases are used by organizations including operational, distributed, external, data warehouses and data marts. Database development for large corporate databases requires a top-down planning effort involving planning, requirements specification and logical and physical design. Chapter Summary (cont)