Enterprise Knowledge Management: The Data Quality Approach

Overview

Your company captures and stores tremendous amounts of information about every aspect of its business. But with this rise in the quantity of information has come a corresponding decrease in its quality. Now more than ever, reversing this trend may spell the difference between success and failure. How can you and your organization respond to this challenge?

Enterprise Knowledge Management gives you just what you need: a precise yet adaptable methodology for defining, measuring, ...

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Overview

Your company captures and stores tremendous amounts of information about every aspect of its business. But with this rise in the quantity of information has come a corresponding decrease in its quality. Now more than ever, reversing this trend may spell the difference between success and failure. How can you and your organization respond to this challenge?

Enterprise Knowledge Management gives you just what you need: a precise yet adaptable methodology for defining, measuring, and improving data quality and managing business intelligence. This one-of-a-kind book begins by laying out an economic framework for understanding the real business value of data quality. It then outlines rules for measuring data quality and determining where it can and should be improved. Finally, it teaches proven techniques through which you can achieve meaningful advances in the quality of your business data, including domain- and mapping-based consolidation of enterprise knowledge.

Features

  • Expert advice from a highly successful data quality consultant.
  • Rigorously methodical in its approach to the problem and the detailed solution it presents.
  • Teaches you to measure quality in real business terms and to achieve meaningful, demonstrable improvement.
  • Uniquely combines business acumen and technical expertise-an indispensable resource for managers and IT professionals alike.
  • Documents the high costs of bad data and details the options available to any company that wants to transform mere data into true enterprise knowledge.

Audience: IT, Database, and Business Managers.

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Product Details

Meet the Author

David Loshin is President of Knowledge Integrity, Inc., a company specializing in data management consulting. The author of numerous books on performance computing and data management, including “Master Data Management" (2008) and “Business Intelligence - The Savvy Manager’s Guide" (2003), and creator of courses and tutorials on all facets of data management best practices, David is often looked to for thought leadership in the information management industry.

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Read an Excerpt

Chatper 1: Introduction

Without even realizing it, everyone is affected by poor data quality. Some are affected directly in annoying ways, such as receiving two or three identical mailings from the same sales organization in the same week. Some are affected in less direct ways, such as the 20-minute wait on hold for a customer service department. Some are affected more malevolently through deliberate fraud, such as identity theft. But whenever poor data quality, inconsistencies, and errors bloat both companies and government agencies and hamper their ability to provide the best possible service, everyone suffers.

Data quality seems to be a hazy concept, but the lack of data quality severely hampers the ability of organizations to effectively accumulate and manage enterprise-wide knowledge. The goal of this book is to demonstrate that data quality is not an esoteric notion but something that can be quantified, measured, and improved, all with a strict focus on return on investment. Our approach is that knowledge management is a pillar that must stand securely on a pedestal of data quality, and by the end of this book, the reader should be able to build that pedestal.

This book covers these areas.

  • Data ownership paradigms
  • The definition of data quality
  • An economic framework for data quality, including steps in building a return on investment model to justify the costs of a data quality program
  • The dimensions of data quality
  • Using statistical process control as a tool for measurement
  • Data domains and mappings between those domains
  • Data quality rules and business rules
  • Measurement and current state assessment
  • Data quality requirementsanalysis
  • Metadata and policy
  • Rules-based processing
  • Discovery of metadata and data quality and business rules
  • Data cleansing
  • Root cause analysis and supplier management
  • Data enhancement
  • Putting it all into practice
The end of the book summarizes the processes discussed and the steps to building a data quality practice. Before we dive into the technical components, however, it is worthwhile to spend some time looking at some real-world examples for motivation. In the next section, you will see some examples of "data quality horror stories" - tales of adverse effects of poor data quality.

1.1.1 Bank Deposit?

In November of 1998, it was reported by the Associated Press that a New York man allegedly brought a dead deer into a bank in Stamford, Connecticut, because he was upset with the bank's service. Police say the 70-year-old argued with a teller over a clerical mistake with his checking account. Because he was apparently unhappy with the teller, he went home, got the deer carcass and brought it back to the branch office.

1.1.2 CD Mail Fraud

Here is a news story taken from the Associated Press newswire. The text is printed with permission. Newark - For four years a Middlesex County man fooled the computer fraud programs at two music-by-mail clubs, using 1,630 aliases to buy music CDs at rates offered only to first-time buyers.

David Russo, 33, of Sayerville, NJ, admitted yesterday that he received 22,260 CDs by making each address - even if f it listed the same post office box - different enough to evade fraud-detection computer programs.

Among his methods: adding fictitious apartment numbers, unneeded direction abbreviations and extra punctuation marks. (Emphasis mine) The scam is believed to be the largest of its kind in the nation, said Assistant U.S. Attorney Scott S. Christie, who prosecuted the case. The introductory offers typically provided nine free CDs with the purchase of one CD at the regular price, plus shipping and handling. Other CDs then had to be purchased later to fulfill club requirements. Russo paid about $56,000 for CDs, said Paul B. Brickfield, his lawyer, or an average of $2.50 each. He then sold the CDs at flea markets for about $10 each, Brickfield said. Russo pleaded guilty to a single count of mail fraud. He faces about 12 to 18 months in prison and a fine of up to $250,000.

1.1.3 Mars Orbiter

The Mars Climate Orbiter, a key part of NASA's program to explore the planet Mars, vanished in September 1999 after rockets were fired to bring it into orbit of the planet. It was later discovered by an investigative board that NASA engineers failed to convert English measures of rocket thrusts to newtons, a metric system measuring rocket force, and that was the root cause of the loss of the spacecraft. The orbiter smashed into the planet instead of reaching a safe orbit. This discrepancy between the two measures, which was relatively small, caused the orbiter to approach Mars at too low an altitude. The result was the loss of a $125 million spacecraft and a significant setback in NASA's ability to explore Mars...

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Table of Contents

Preface
Chapter 1 - Introduction
Chapter 2 - Who Owns Information?
Chapter 3 - Data Quality in Practice
Chapter 4 - Economic Framework of Data Quality and the Value Proposition
Chapter 5 - Dimensions of Data Quality
Chapter 6 - Statistical Process Control and the Improvement Cycle
Chapter 7 - Domains, Mappings, and Enterprise Reference Data
Chapter 8 - Data Quality Assertions and Business Rules
Chapter 9 - Measurement and Current State Assessment
Chapter 10 - Data Quality Requirements
Chapter 11 - Metadata, Guidelines, and Policy
Chapter 12 - Rule-Based Data Quality
Chapter 13 - Metadata and Rule Discovery
Chapter 14 - Data Cleansing
Chapter 15 - Root Cause Analysis and Supplier Management
Chapter 16 - Data Enrichment/Enhancement
Chapter 17 - Data Quality and Business Rules in Practice
Chapter 18 - Building the Data Quality Practice

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Sort by: Showing all of 2 Customer Reviews
  • Anonymous

    Posted August 29, 2001

    Excellent Book!

    I am a consultant in the area of knowledge management and data modeling, and I have read all the major books on the topic of data quality, and this book is, by far, the best treatement of the subject. Enterprise Knowledge Management is a great handbook for both the manager and the practitioner - Loshin deals with the personal and political aspects of data ownership, buildingan ROI model for data cleansing, and a concise methodology about how to measure levels of data quality. I have heard speeches by a handful of the major speakers in the area, and my impression is that they are willing to tell you to go and measure data quality, or to talk about data quality issues, but they would be hard-pressed to actually solve the problems. From reading this book, it is clear that Loshin is an expert in this area, and that he has not only dealt with the high level aspects of data management but also has experience in the trenches. This book is perfect for both manager and technical people dealing with data warehousing or data migration projects.

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  • Anonymous

    Posted February 2, 2001

    Author's Comments

    Poor data quality has a profound effect on our everyday lives - consider the 2000 Presidential election and the Florida recount nightmare. Yet, the extent of poor data quality can be effectively measured and therefore, controlled, when we apply process management, technology, and good old common sense! 'Bad data' has traditionally been masked in terms of curious anecdotes and curious stories that propagate through an organization. Yet, poor data quality has a serious effect on a company's bottom line, especially when bad data propagates out to the customer via incorrect billing, wrong delivery addresses, public relations nightmares, etc. In my experience consulting on data management projects, I noticed many patterns associated with data quality problems. In this book, I try to address both the management issues as well as the technical issues associated with the different kinds of problems, and I try to provide a framework for capturing the knowledge embedded in data quality rules and managing those rules as enterprise knowledge. I provide a breakdown of the dimensions of data quality, and delineate a framework for expressing data quality rules, measuring those rules, and assessing levels of data quality in a 'Data Quality Scorecard.' This scorecard can then be used as a benchmark and basis for a continuous information quality improvement program. In addition, we look at how understanding the business rules associated with the use of information throughout an enterprise can enhance the overall value of the enterprise knowledge asset. Integrating business rules in use across the organization is an important step in enhancing the enterprise knowledge resource, and we have found this to be a successful paradigm in knowledge management applications deployed with our customers. Data quality problems are widespread, menacing, and can cause serious operational and strategic problems in any organization. By reading my book, I hope to expose some of the critical issues associated with poor data quality and to demonstrate that by fixing the root of data quality problems, organizations can reduce costs due to error detection, correction, and rework, and increase profits by making strategic use of high quality information.

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