Slide introduction to information ssstem 10th obien chap005 eng

James A O’Brien Introduction to Information Systems Chapter Data Resource Management Irwin/McGraw-Hill Copyright © 2001, The McGraw-Hill Companies, Inc All rights res James A O’Brien Introduction to Information Systems Chapter Objectives • 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 Irwin/McGraw-Hill James A O’Brien Introduction to Information Systems Chapter Objectives • 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 Irwin/McGraw-Hill James A O’Brien Introduction to Information Systems Logical Data Elements Personnel Database Employee Record Name Data Payroll File Benefits File Employee Record Employee Record SS Salary Name Data Irwin/McGraw-Hill Data Data SS Salary Name Data Data Data Employee Record SS Salary Name Data Data Data SS Salary Data Data James A O’Brien Introduction to Information Systems Database Management Systems Operating Operating System System Database Management • • • • Database Database Management Management System System Database Development Database Interrogation Database Maintenance Application Development Irwin/McGraw-Hill Application Application Programs Programs Databases Data Dictionary James A O’Brien Introduction to Information Systems Major Types of Databases External Databases on the Internet & Online Services Distributed Databases on Intranets & Other Networks Irwin/McGraw-Hill Client PC or NC End User Databases Network Server Server Operational Databases of the Organization Data Warehouse Data Mart James A O’Brien Introduction to Information Systems Data Warehouse and Data Mining Operational Databases Data Acquisition Subsystem Warehouse Design Subsystem Irwin/McGraw-Hill Data Management Subsystem Metadata Management Subsystem Analytical Data Store Enterprise Warehouse Data Mart Metadata Directory Metadata Repository Client PC or NC Data DataAccess Access and andDelivery Delivery Subsystem Subsystem Web Web Information Information System System James A O’Brien Introduction to Information Systems Web-Based Systems The Internet Intranets Extranets Web Browser Client PCs or NCs Irwin/McGraw-Hill Network Server Web Web Server Server Software Software Web Objects HTML pages GIF image files Video files James A O’Brien Introduction to Information Systems Data Resource Management Irwin/McGraw-Hill Data Administration Data Planning Database Administration James A O’Brien Introduction to Information Systems Database Structures Network Structure Hierarchical Structure Dept A Dept Project A Employee Project B Employee Employee 22 Employee Dept B Employee Project A Employee Project B Relational Structure Dept Dname Dloc Dmgr Empno Ename Etitle Dept A A B B C C Irwin/McGraw-Hill James A O’Brien Introduction to Information Systems Database Structures (cont) 1 Bank Account Object Attributes • Customer • Balance Denver West Feb East Actual Operations • Deposit • Withdraw Budget Sales TV VCR Margin TV VCR Multidimensional Database Structure Irwin/McGraw-Hill Checking Account Savings Account Object Object Attributes Attributes • Credit Line • Mthly Statement • Credit Line • Mthly Statement • Calculate Interest • Print Mthly Statement • Calculate Interest • Print Mthly Statement Operations Operations Object-Oriented Database Structure James A O’Brien Introduction to Information Systems Accessing Files and Databases Key Transformation Sequential Organization Key Fields URLs Sequential Access Irwin/McGraw-Hill Direct Access Indexed Sequential Access Method James A O’Brien Introduction to Information Systems Database Development 1 Data Data Planning Planning Physical Physical Models Models Enterprise Enterprise Model Model 5 Physical Physical Design Design 2 Requirements Requirements Specifications Specifications Logical Logical Models Models User User Needs Needs Description Description 4 Logical Logical Design Design 3 Conceptual Conceptual Design Design Data Data Models Models Irwin/McGraw-Hill James A O’Brien Introduction to Information Systems Chapter Summary • 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 Irwin/McGraw-Hill James A O’Brien Introduction to Information Systems Chapter Summary (cont) • 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 Irwin/McGraw-Hill ... James A O’Brien Introduction to Information Systems Data Resource Management Irwin/McGraw-Hill Data Administration Data Planning Database Administration James A O’Brien Introduction to Information. .. Data Store Enterprise Warehouse Data Mart Metadata Directory Metadata Repository Client PC or NC Data DataAccess Access and andDelivery Delivery Subsystem Subsystem Web Web Information Information...James A O’Brien Introduction to Information Systems Chapter Objectives • Explain the importance of data resource management to an organization, and how it can be implemented