The Evolution of Data Models The quest for better data management has led to different models that attempt to resolve the file system’s critical shortcomings. Because each data model evolved from its predecessors‚ it is essential to examine the major data models in roughly chronological order. 1.1 The Hierarchical Model A Hierarchical Database Model is a data model in which the data is organized into a tree-like structure. The structure allows representing information using parent/child relationships:
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a p t e r 7 MANAGING DATA RESOURCES 7.1 © 2002 by Prentice Hall LEARNING OBJECTIVES • COMPARE TRADITIONAL FILE ORGANIZATION & MANAGEMENT TECHNIQUES • DESCRIBE HOW DATABASE MANAGEMENT SYSTEM ORGANIZES INFORMATION * 7.2 © 2002 by Prentice Hall LEARNING OBJECTIVES • IDENTIFY TYPES OF DATABASE‚ PRINCIPLES OF DATABASE DESIGN • DISCUSS DATABASE TRENDS * 7.3 © 2002 by Prentice Hall MANAGEMENT CHALLENGES • TRADITIONAL DATA FILE ENVIRONMENT • DATABASE APPROACH TO DATA MANAGEMENT • CREATING DATABASE
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ITN 100 ASSIGNMENT 3 | 01N LAST NAME F NAME CHAPTER 7 & 8 MINI-CASES Q1: PAT’S ENGINEERING WORKS Pat’s Engineering Works is a small company that specializes in complex engineering consulting projects. The company is moving into new offices and want you to design their network. They have a staff of eight engineers (which is expected to grow to 12 over the next five years)‚ plus another eight management and clerical employees who also need network
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1. One of your inmates is a murderer. When he was 18 years old‚ he killed his girlfriend. He received a sentence of life with the possibility of parole. He is now 58 years old and you have come to realize that he is a model prisoner. He has shown impeccable behavior‚ has a job within the prison‚ has been around the community during furloughs and has become a positive influence and a great role model for other prisoners. Also‚ he has formed a bond with the victim’s family‚ who has forgiven him for
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DATA PROTECTION ACT 1998 GUIDANCE TO SOCIAL SERVICES March 2000 CONTENTS Section 1 Section 2 Section 3 Introduction Glossary of terms Good practice in record keeping Principles underpinning good practice A policy framework Retention and destruction of records Records subject to statutory requirements Management commitment to good practice 4 8 14 14 15 16 17 17 Contents page 1 Section 4 Details of the Act and its implementation Access to social services records Personal
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What were you afraid of when you were a child ? There were many things that I was scared of when I was little. Some of the fears I acquired were due to prevailing gossips and unfounded tales talked about by the people who were close to me - friends‚ cousins and my parents. But as I mature into my teenage years‚ I realised the folly and absurdities of my fears. In fact‚ some of them were so ludicrous like lurking monsters under my bed and demon-like character that brutally attacked anyone
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massive data breach earlier this year; personal details of some 37 million users‚ as well as the companies financial records‚ were threatened with release. Subsequently‚ large caches of the data were posted online and a then-unknown hacking outfit named The Impact Team claimed responsibility. This breach not only compromised the data from the Ashley Madison database‚ but also Avid Life Media‚ who owns the Madison website‚ as well as two more “hookup” sites. The hackers claimed they were motivated
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there is clearly something different about a small piece of lead and a large bag of feathers‚ even though they weigh the same. What is this difference? The relationship between the lead and feathers is expressed by the physical property called density. Density is defined as the ratio of a substance’s mass to the volume it occupies. Density (g/mL) = Mass (g)___ Volume (mL) In this laboratory exercise‚ you will be using skills and techniques learned earlier to determine the
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11th Edition Chapter 1 Introduction and Data Collection Basic Business Statistics‚ 11e © 2009 Prentice-Hall‚ Inc. Chap 1-1 Learning Objectives In this chapter you learn: How Statistics is used in business The sources of data used in business The types of data used in business The basics of Microsoft Excel The basics of Minitab Basic Business Statistics‚ 11e © 2009 Prentice-Hall‚ Inc.. Chap 1-2 Why Learn Statistics? So you are able to make better sense
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1. What is a data warehouse and why is REI building one? A data warehouse can be described as a “database that stores current and historical data of potential interest to decision makers throughout a company. The data originate in many core operational transaction systems‚ such as systems for sales‚ customer accounts‚ and manufacturing‚ and may include data from Web site transactions.1” REI is building a data warehouse to improve the company and to meet the needs of the customers. REI’s data
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