1.d. Describe the use of null values in a database e. What are the two requirements to ensure entity integrity? 3.d. What are the sources of business rules, and what is the database designer’s role with regard to business rules? e. Describe the three basic characteristics of Big Data databases.
1.d. Describe the use of null values in a database e. What are the two requirements to ensure entity integrity? 3.d. What are the sources of business rules, and what is the database designer’s role with regard to business rules? e. Describe the three basic characteristics of Big Data databases.
Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter4: Entity Relationship (er) Modeling
Section: Chapter Questions
Problem 14RQ
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1.d. Describe the use of null values in a
e. What are the two requirements to ensure entity integrity?
3.d. What are the sources of business rules, and what is the database designer’s role with regard to business rules?
e. Describe the three basic characteristics of Big Data databases.
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