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Completeness constraints - PowerPoint PPT Presentation

Chapter 4: The Enhanced ER Model and Business Rules

Chapter 4: The Enhanced ER Model and Business Rules. Modern Database Management 7 th Edition Jeffrey A. Hoffer, Mary B. Prescott, Fred R. McFadden. Objectives. Definition of terms Use of supertype/subtype relationships Use of generalization and specialization techniques

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Data Quality

Data Quality. Class 3. Goals. Dimensions of Data Quality Data Extraction, Transformation, and Loading Data Cleansing Project. Dimensions of Data Quality. Poor data quality is similar to obscenity- It seems as if there are no real ways to measure it, but you know it when you see it!

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Completeness constraints - PowerPoint PPT Presentation

Chapter 4: The Enhanced ER Model and Business Rules

Data Quality