A subtype is a sub-grouping of the entities in an entity type that is meaningful to the organization and that shares common attributes or relationships distinct from other subgroups. What is an overlapping subtype? Describe and provide an example. What is a disjoint subtype? Describe and provide an example. Explain the difference between partial completeness and total completeness?
A subtype is a sub-grouping of the entities in an entity type that is meaningful to the organization and that shares common attributes or relationships distinct from other subgroups. What is an overlapping subtype? Describe and provide an example. What is a disjoint subtype? Describe and provide an example. Explain the difference between partial completeness and total completeness?
Principles of Information Systems (MindTap Course List)
12th Edition
ISBN:9781285867168
Author:Ralph Stair, George Reynolds
Publisher:Ralph Stair, George Reynolds
Chapter5: Database Systems And Applications
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A subtype is a sub-grouping of the entities in an entity type that is meaningful to the organization and that shares common attributes or relationships distinct from other subgroups.
What is an overlapping subtype? Describe and provide an example.
What is a disjoint subtype? Describe and provide an example.
Explain the difference between partial completeness and total completeness?
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