Presentation is loading. Please wait.

Presentation is loading. Please wait.

7.1 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources MANAGING.

Published byHoratio Dawson Modified over 9 years ago

Similar presentations

Presentation on theme: "7.1 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources MANAGING."— Presentation transcript:

1 7.1 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources MANAGING DATA DATARESOURCES

2 7.2 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Why do businesses have trouble finding the information they need in their information systems?Why do businesses have trouble finding the information they need in their information systems? How does a DBMS improve the organization of business information?How does a DBMS improve the organization of business information? What are the managerial requirements of a data- base environment?What are the managerial requirements of a data- base environment? What new technologies make databases more accessible and useful?What new technologies make databases more accessible and useful? OBJECTIVES

3 7.3 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Bit: Smallest unit of data; binary digit (0,1) Byte: Group of bits that represents a single character Field: Group of related bytes - related words or a complete number Record: Group of related fields File: Group of records of same type Database: Group of related files 7.1 ORGANIZING DATA IN A TRADITIONAL FILE ENVIRONMENT

4 7.4 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources File Organization Terms and Concepts 7.1 ORGANIZING DATA IN A TRADITIONAL FILE ENVIRONMENT

5 7.5 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Entity: Person, place, thing, event about which information is maintainedEntity: Person, place, thing, event about which information is maintained Attribute: Description of a particular entityAttribute: Description of a particular entity Key Field: Unique identifier field used to retrieve, update, or sort a recordKey Field: Unique identifier field used to retrieve, update, or sort a record File Organization Terms and Concepts 7.1 ORGANIZING DATA IN A TRADITIONAL FILE ENVIRONMENT

6 7.6 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources File Organization Terms and Concepts 7.1 ORGANIZING DATA IN A TRADITIONAL FILE ENVIRONMENT

7 7.7 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources 7.1 ORGANIZING DATA IN A TRADITIONAL FILE ENVIRONMENT Data redundancyData redundancy Program-data dependenceProgram-data dependence Lack of flexibilityLack of flexibility Poor securityPoor security Lack of data-sharing and availabilityLack of data-sharing and availability Problems with the Traditional File Environment

8 7.8 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources 7.1 ORGANIZING DATA IN A TRADITIONAL FILE ENVIRONMENT Problems with the Traditional File Environment

9 7.9 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Why do businesses have trouble finding the information they need in their information systems?Why do businesses have trouble finding the information they need in their information systems? How does a DBMS improve the organization of business information?How does a DBMS improve the organization of business information? What are the managerial requirements of a data- base environment?What are the managerial requirements of a data- base environment? What new technologies make databases more accessible and useful?What new technologies make databases more accessible and useful? OBJECTIVES

10 7.10 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources 7.2 THE DATABASE APPROACH TO DATA MANAGEMENT Database A collection of data organized to service many applications at the same time by storing and managing data so they appear to be at one locationA collection of data organized to service many applications at the same time by storing and managing data so they appear to be at one location Database Management System (DBMS)

11 7.11 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources 7.2 THE DATABASE APPROACH TO DATA MANAGEMENT The Database Management System (DBMS) Software which creates and maintains databasesSoftware which creates and maintains databases Eliminates requirement for data definition statements in Application ProgramsEliminates requirement for data definition statements in Application Programs Acts as interface between application programs and physical data filesActs as interface between application programs and physical data files Separates logical and physical views of dataSeparates logical and physical views of data Database Management System (DBMS)

12 7.12 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources 7.2 THE DATABASE APPROACH TO DATA MANAGEMENT

13 7.13 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Components of a Database Data Definition Language:Data Definition Language: –Specifies content and structure of database and defines each data element Data Manipulation Language:Data Manipulation Language: –Manipulates data in a database Data Dictionary:Data Dictionary: –Stores definitions of data elements, and data characteristics 7.2 THE DATABASE APPROACH TO DATA MANAGEMENT Database Management System (DBMS)

14 7.14 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Types of Databases Hierarchical DBMSHierarchical DBMS Organizes data in a tree-like structure Prevalent in large legacy systems Less flexible than RDBMS Lacks support for English language-like queries Relational DBMS (RDBMS)Relational DBMS (RDBMS) Represents data as 2D tables called ‘relations’ Relates data across tables based on ‘key’ Egs: DB2, Oracle, MS SQL Server, MS Access 7.2 THE DATABASE APPROACH TO DATA MANAGEMENT

15 7.15 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources 7.2 THE DATABASE APPROACH TO DATA MANAGEMENT Types of Databases

16 7.16 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources 7.2 THE DATABASE APPROACH TO DATA MANAGEMENT Types of Databases

17 7.17 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Three Basic Operations in a Relational DBMS Select: Creates subset of rows that meet specific criteriaSelect: Creates subset of rows that meet specific criteria Join: Combines relational tables to provide users with informationJoin: Combines relational tables to provide users with information Project: Enables users to create new tables containing only relevant informationProject: Enables users to create new tables containing only relevant information 7.2 THE DATABASE APPROACH TO DATA MANAGEMENT Types of Databases

18 7.18 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources 7.2 THE DATABASE APPROACH TO DATA MANAGEMENT Types of Databases

19 7.19 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Why do businesses have trouble finding the information they need in their information systems?Why do businesses have trouble finding the information they need in their information systems? How does a DBMS improve the organization of business information?How does a DBMS improve the organization of business information? What are the managerial requirements of a data- base environment?What are the managerial requirements of a data- base environment? What new technologies make databases more accessible and useful?What new technologies make databases more accessible and useful? OBJECTIVES

20 7.20 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Entity-Relationship (ER) DiagramEntity-Relationship (ER) Diagram –Methodology for documenting databases illustrating relationships between database entities NormalizationNormalization –Process of creating small stable data structures from complex groups of data Designing Databases 7.3 CREATING A DATABASE ENVIRONMENT

21 7.21 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Designing Databases 7.3 CREATING A DATABASE ENVIRONMENT

22 7.22 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Designing Databases 7.3 CREATING A DATABASE ENVIRONMENT

23 7.23 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Designing Databases 7.3 CREATING A DATABASE ENVIRONMENT

24 7.24 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Why do businesses have trouble finding the information they need in their information systems?Why do businesses have trouble finding the information they need in their information systems? How does a DBMS improve the organization of business information?How does a DBMS improve the organization of business information? What are the managerial requirements of a data- base environment?What are the managerial requirements of a data- base environment? What new technologies make databases more accessible and useful?What new technologies make databases more accessible and useful? OBJECTIVES

25 7.25 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Multidimensional Data Analysis On-line Analytical Processing (OLAP) Multidimensional data analysisMultidimensional data analysis Supports manipulation and analysis of large volumes of data from multiple dimensions/perspectivesSupports manipulation and analysis of large volumes of data from multiple dimensions/perspectives 7.4 DATABASE TRENDS

26 7.26 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Multidimensional Data Analysis 7.4 DATABASE TRENDS

27 7.27 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Data Warehouse Consolidates current and historical dataConsolidates current and historical data Supports query tools for management decision makingSupports query tools for management decision makingDatamining Tools for finding hidden patterns and relationships in large pools of dataTools for finding hidden patterns and relationships in large pools of data Data Warehouses and Datamining 7.4 DATABASE TRENDS

28 7.28 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Data Warehouses and Datamining 7.4 DATABASE TRENDS

29 7.29 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Data Warehousing and Datamining 7.4 DATABASE TRENDS

30 7.30 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Databases and the Web The Web and Hypermedia Databases Organizes data as network of hyperlinksOrganizes data as network of hyperlinks Database Server runs a DBMS to provide dataDatabase Server runs a DBMS to provide data Supports text, graphics, sound, video and executable programsSupports text, graphics, sound, video and executable programs 7.4 DATABASE TRENDS

31 7.31 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Databases and the Web 7.4 DATABASE TRENDS

32 7.32 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Databases and the Web 7.4 DATABASE TRENDS

33 7.33 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Databases and the Web 7.4 DATABASE TRENDS

34 7.34 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources Databases and the Web 7.4 DATABASE TRENDS

35 7.35 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources MANAGING DATA DATARESOURCES

Download ppt "7.1 Copyright © 2005 Pearson Education Canada Inc. Management Information Systems, Second Canadian Edition Chapter 7: Managing Data Resources MANAGING."

Similar presentations

C6 Databases.

C6 Databases.
The database approach to data management provides significant advantages over the traditional file-based approach Define general data management concepts.

The database approach to data management provides significant advantages over the traditional file-based approach Define general data management concepts.
Management Information Systems, Sixth Edition

Management Information Systems, Sixth Edition
Managing Data Resources

Managing Data Resources
7.1 © 2004 by Prentice Hall Management Information Systems 8/e Chapter 7 Managing Data Resources 7 7 MANAGING DATA DATARESOURCES Chapter.

7.1 © 2004 by Prentice Hall Management Information Systems 8/e Chapter 7 Managing Data Resources 7 7 MANAGING DATA DATARESOURCES Chapter.
Managing Data Resources

Managing Data Resources
7.1 © 2002 by Prentice Hall c h a p t e r 7 7 MANAGING DATA DATARESOURCES.

7.1 © 2002 by Prentice Hall c h a p t e r 7 7 MANAGING DATA DATARESOURCES.
7.1 © 2006 by Prentice Hall 7 Chapter Managing Data Resources.

7.1 © 2006 by Prentice Hall 7 Chapter Managing Data Resources.
ORGANIZING DATA IN A TRADITIONAL FILE ENVIRONMENT

ORGANIZING DATA IN A TRADITIONAL FILE ENVIRONMENT
Organizing Data & Information

Organizing Data & Information
McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. All rights reserved.McGraw-Hill/Irwin Copyright © 2008 The McGraw-Hill Companies, Inc.

McGraw-Hill/Irwin Copyright © 2008, The McGraw-Hill Companies, Inc. All rights reserved.McGraw-Hill/Irwin Copyright © 2008 The McGraw-Hill Companies, Inc.
Managing Data Resources

Managing Data Resources
Managing Data Resources

Managing Data Resources
Information Technology in Organizations

Information Technology in Organizations
Data Resource Management Data Concepts Database Management Types of Databases Chapter 5 McGraw-Hill/Irwin Copyright © 2007 by The McGraw-Hill Companies,

Data Resource Management Data Concepts Database Management Types of Databases Chapter 5 McGraw-Hill/Irwin Copyright © 2007 by The McGraw-Hill Companies,
SESSION 7 MANAGING DATA DATARESOURCES. File Organization Terms and Concepts Field: Group of words or a complete number Record: Group of related fields.

SESSION 7 MANAGING DATA DATARESOURCES. File Organization Terms and Concepts Field: Group of words or a complete number Record: Group of related fields.
Mgt 20600: IT Management & Applications Databases Tuesday April 4, 2006.

Mgt 20600: IT Management & Applications Databases Tuesday April 4, 2006.
Managing Data Resources. File Organization Terms and Concepts Bit: Smallest unit of data; binary digit (0,1) Byte: Group of bits that represents a single.

Managing Data Resources. File Organization Terms and Concepts Bit: Smallest unit of data; binary digit (0,1) Byte: Group of bits that represents a single.
7.1 © 2006 by Prentice Hall 7 Chapter Managing Data Resources.

7.1 © 2006 by Prentice Hall 7 Chapter Managing Data Resources.
Managing Data Resources

Managing Data Resources

Similar presentations

Ads by Google