Foundations of Business Intelligence: Databases and Information
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1. Compare and contrast the differences between data integrity and data consistency. Please provide an example for each one.
2. Databases require both a physical and conceptual model. Compare these models. How do they differ?
3. What is the relevance of data mining in organizations?
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Solution Summary
Explanations of data modeling and data mining in brief.
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1. Compare and contrast the differences between data integrity and data consistency. Please provide an example for each one.
Integrity means typed database whereas consistency is semantic. Data integrity relates to accuracy and consistency of data stored in a database, data warehouse or any other construct. For example if there are two tables- employee table and department table with department_id in both tables, indicating the department in which employee is working, there would not be any employee working in a department that doesn't exist.
Data consistency dictates that only valid data will be a part of database. The data values stored in the database must satisfy certain consistency ...
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