Eleventh Edition 1 Introduction to Information Systems Essentials for the Internetworked E-Business Enterprise Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. C h a p t e r James A. O’Brien 5 Data Resource Management

Eleventh Edition James A. O’Brien 2 Introduction to Information Systems Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Explain the importance of implementing data resource management processes and technologies in an organization. Outline the advantages of a database management approach to managing the data resources of a business. Explain how database management software helps business professionals and supports the operations and management of a business. Chapter Objectives

Eleventh Edition James A. O’Brien 3 Introduction to Information Systems 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

Eleventh Edition James A. O’Brien 4 Introduction to Information Systems 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

Eleventh Edition James A. O’Brien 5 Introduction to Information Systems 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

Eleventh Edition James A. O’Brien 6 Introduction to Information Systems 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

Eleventh Edition James A. O’Brien 7 Introduction to Information Systems 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

Eleventh Edition James A. O’Brien 8 Introduction to Information Systems 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

Eleventh Edition James A. O’Brien 9 Introduction to Information Systems Irwin/McGraw-Hill Copyright © 2002, The McGraw-Hill Companies, Inc. All rights reserved. Data Resource Management Data Administration Data Planning Database Administration

Eleventh Edition James A. O’Brien 10 Introduction to Information Systems 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

Eleventh Edition James A. O’Brien 11 Introduction to Information Systems 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

Eleventh Edition James A. O’Brien 12 Introduction to Information Systems 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

Eleventh Edition James A. O’Brien 13 Introduction to Information Systems 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

Eleventh Edition James A. O’Brien 14 Introduction to Information Systems 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

Eleventh Edition James A. O’Brien 15 Introduction to Information Systems 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)